11050-21-8 CIGUATOXIN CTX 1 Ciguatoxin 1 Ciguatoxin CTX 1 HSDB 7241 P-CTX 1 Pacific ciguatoxin 1 Spiro(furan-2(3H),2'(3'H)-oxepino(2'''',3'''':5''',6''')pyrano(2''',3''':5'',6'')pyrano(2'',3'':6',7')oxepino(2',3':6,7)oxepino(3,2-b)pyrano(2''''',3''''':6'''',7'''')oxepino(2'''',3'''':5''',6''')pyrano(2''',3''':7'',8'')oxocino(2'',3'':5',6')pyrano(2',3':6,7)oxepino(2,3-h)oxonin), ciguatoxin deriv.