1H,10H-Pyrrolo(1,2-c)purine-9,10,10-triol, 2-amino-4-(((aminocarbonyl)oxy)methyl)-3a,4,5,6,8,9-hexahydro-5-hydroxy-6-imino-, 9-(hydrogen sulfate), (3aS,4R,9S,10aS)- 64296-26-0 Gonyantoxin 4 Gonyautoxin IV