#Some annoying cases that previously failed
4,4'-{(9-oxo-9H-fluorene-2,7-diyl)bis[sulfonyl(methylimino)]}dibutanoic acid	InChI=1S/C23H26N2O9S2/c1-24(11-3-5-21(26)27)35(31,32)15-7-9-17-18-10-8-16(14-20(18)23(30)19(17)13-15)36(33,34)25(2)12-4-6-22(28)29/h7-10,13-14H,3-6,11-12H2,1-2H3,(H,26,27)(H,28,29)
4,4'-{9H-fluorene-2,7-diylbis[sulfonyl(methylimino)]}dibutanoic acid	InChI=1S/C23H28N2O8S2/c1-24(11-3-5-22(26)27)34(30,31)18-7-9-20-16(14-18)13-17-15-19(8-10-21(17)20)35(32,33)25(2)12-4-6-23(28)29/h7-10,14-15H,3-6,11-13H2,1-2H3,(H,26,27)(H,28,29)
diethyl {1,3-phenylenebis[imino(thioxomethylene)]}biscarbamate	InChI=1S/C14H18N4O4S2/c1-3-21-13(19)17-11(23)15-9-6-5-7-10(8-9)16-12(24)18-14(20)22-4-2/h5-8H,3-4H2,1-2H3,(H2,15,17,19,23)(H2,16,18,20,24)
N,N'-{(4-chloro-1,3-phenylene)bis[imino(thioxomethylene)]}dipropanamide	InChI=1S/C14H17ClN4O2S2/c1-3-11(20)18-13(22)16-8-5-6-9(15)10(7-8)17-14(23)19-12(21)4-2/h5-7H,3-4H2,1-2H3,(H2,16,18,20,22)(H2,17,19,21,23)
N,N'-{[4-(4-morpholinyl)-1,3-phenylene]bis[imino(thioxomethylene)]}bis(2-methoxybenzamide)	InChI=1S/C28H29N5O5S2/c1-36-23-9-5-3-7-19(23)25(34)31-27(39)29-18-11-12-22(33-13-15-38-16-14-33)21(17-18)30-28(40)32-26(35)20-8-4-6-10-24(20)37-2/h3-12,17H,13-16H2,1-2H3,(H2,29,31,34,39)(H2,30,32,35,40)
N,N'-{1,5-naphthalenediylbis[imino(thioxomethylene)]}dipropanamide	InChI=1S/C18H20N4O2S2/c1-3-15(23)21-17(25)19-13-9-5-8-12-11(13)7-6-10-14(12)20-18(26)22-16(24)4-2/h5-10H,3-4H2,1-2H3,(H2,19,21,23,25)(H2,20,22,24,26)
N,N'-{1,8-naphthalenediylbis[imino(thioxomethylene)]}bis(2-fluorobenzamide)	InChI=1S/C26H18F2N4O2S2/c27-18-11-3-1-9-16(18)23(33)31-25(35)29-20-13-5-7-15-8-6-14-21(22(15)20)30-26(36)32-24(34)17-10-2-4-12-19(17)28/h1-14H,(H2,29,31,33,35)(H2,30,32,34,36)
N,N'-{1,8-naphthalenediylbis[imino(thioxomethylene)]}di(2-furamide)	InChI=1S/C22H16N4O4S2/c27-19(16-9-3-11-29-16)25-21(31)23-14-7-1-5-13-6-2-8-15(18(13)14)24-22(32)26-20(28)17-10-4-12-30-17/h1-12H,(H2,23,25,27,31)(H2,24,26,28,32)
N,N'-{1,8-naphthalenediylbis[imino(thioxomethylene)]}di(2-thiophenecarboxamide)	InChI=1S/C22H16N4O2S4/c27-19(16-9-3-11-31-16)25-21(29)23-14-7-1-5-13-6-2-8-15(18(13)14)24-22(30)26-20(28)17-10-4-12-32-17/h1-12H,(H2,23,25,27,29)(H2,24,26,28,30)
N,N'-{oxybis[1,3-benzothiazole-6,2-diyliminosulfonyl-4,1-phenyleneimino(thioxomethylene)]}bis[3-(2-furyl)acrylamide]	InChI=1S/C42H30N8O9S6/c51-37(19-11-27-3-1-21-57-27)47-39(60)43-25-5-13-31(14-6-25)64(53,54)49-41-45-33-17-9-29(23-35(33)62-41)59-30-10-18-34-36(24-30)63-42(46-34)50-65(55,56)32-15-7-26(8-16-32)44-40(61)48-38(52)20-12-28-4-2-22-58-28/h1-24H,(H,45,49)(H,46,50)(H2,43,47,51,60)(H2,44,48,52,61)
N,N'-{oxybis[4,1-phenyleneimino(thioxomethylene)]}bis(3-methylbutanamide)	InChI=1S/C24H30N4O3S2/c1-15(2)13-21(29)27-23(32)25-17-5-9-19(10-6-17)31-20-11-7-18(8-12-20)26-24(33)28-22(30)14-16(3)4/h5-12,15-16H,13-14H2,1-4H3,(H2,25,27,29,32)(H2,26,28,30,33)
N,N'-{oxybis[4,1-phenyleneimino(thioxomethylene)]}dipropanamide	InChI=1S/C20H22N4O3S2/c1-3-17(25)23-19(28)21-13-5-9-15(10-6-13)27-16-11-7-14(8-12-16)22-20(29)24-18(26)4-2/h5-12H,3-4H2,1-2H3,(H2,21,23,25,28)(H2,22,24,26,29)
8,8'-{carbonylbis[imino-3,1-phenylenecarbonylimino(4-methyl-3,1-phenylene)carbonylimino]}dinaphthalene-1,3,5-trisulfonic acid	InChI=1/C51H40N6O23S6/c1-25-9-11-29(49(60)54-37-13-15-41(83(69,70)71)35-21-33(81(63,64)65)23-43(45(35)37)85(75,76)77)19-39(25)56-47(58)27-5-3-7-31(17-27)52-51(62)53-32-8-4-6-28(18-32)48(59)57-40-20-30(12-10-26(40)2)50(61)55-38-14-16-42(84(72,73)74)36-22-34(82(66,67)68)24-44(46(36)38)86(78,79)80/h3-24H,1-2H3,(H,54,60)(H,55,61)(H,56,58)(H,57,59)(H2,52,53,62)(H,63,64,65)(H,66,67,68)(H,69,70,71)(H,72,73,74)(H,75,76,77)(H,78,79,80)/f/h52-57,63,66,69,72,75,78H
2,2'-[ethane-1,2-diylbis(azanylylidenemethanylylidene)]diphenol	InChI=1/C16H16N2O2/c19-15-7-3-1-5-13(15)11-17-9-10-18-12-14-6-2-4-8-16(14)20/h1-8,11-12,19-20H,9-10H2
2,2'-((ethane-1,2-diylbis(azanylylidene))bis(methanylylidene))diphenol	InChI=1/C16H16N2O2/c19-15-7-3-1-5-13(15)11-17-9-10-18-12-14-6-2-4-8-16(14)20/h1-8,11-12,19-20H,9-10H2
2,2'-[ethane-1,2-diylidenebis(azanylylidenemethanylylidene)]bis(cyclohexan-1-ol)	InChI=1/C16H24N2O2/c19-15-7-3-1-5-13(15)11-17-9-10-18-12-14-6-2-4-8-16(14)20/h9-12,15-16,19-20H,1-8H2
2,2'-((ethane-1,2-diylidenebis(azanylylidene))bis(methanylylidene))dicyclohexanol	InChI=1/C16H24N2O2/c19-15-7-3-1-5-13(15)11-17-9-10-18-12-14-6-2-4-8-16(14)20/h9-12,15-16,19-20H,1-8H2
tetramethylethylenediamine	InChI=1S/C6H16N2/c1-7(2)5-6-8(3)4/h5-6H2,1-4H3
