Synonyms: 2,4(1H,3H)-Pyrimidinedione,6-[hydroxy[2,2a,3,4,5,5a,6,7-octahydro-3-methyl-4-(sulfooxy)-1H-1,8,8b-triazaacenaphthylen-7-yl]methyl]-,[2aS-[2aa,3a,4a,5aa,7b(S*)]]-; 1H-1,8,8b-Triazaacenaphthylene,2,4(1H,3H)-pyrimidinedione deriv.; Cylindrospermopsin; Cylindrospermopsine