Synonyms: 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.; 52-epi-CTX 4A; 52-epi-Ciguatoxin 4A; CTX 4B; Ciguatoxin 4B;GT4B; GTX 4b; Gambiertoxin 4b