SMILES: C[C@H]1[C@H](C[C@@H]2C[C@@H](NC3=[N+]2[C@@H]1CN3)[C@H](C4=CC(=O)NC(=O)N4)O)OS(=O)(=O)[O-]
Description: The molecule is a zwitterion resulting from the transfer of a proton from the sulfooxy group to one of the nitrogens of the guanidine group of cylindrospermopsin. It has a role as a cyanotoxin. It is a tautomer of a cylindrospermopsin.