Toxin C4

Protogonyautoxin 4

Protogonyaulax Toxin C4

Carbamoyl-N-sulfogonyautoxin IV

(3aS,10aS)-2,6-Diimino-4α-[[(N-sulfocarbamoyl)oxy]methyl]-2,3,3aα,4,5,6,8,9-octahydro-1H,10H-pyrrolo[1,2-c]purine-5,9α,10,10-tetrol 9-sulfate

(3aS,10aS)-3aα,4,5,6,9,10-Hexahydro-2-amino-6-imino-4α-[[(sulfoaminocarbonyl)oxy]methyl]-1H,8H-pyrrolo[1,2-c]purine-5,9α,10,10-tetrol 9-sulfate