Synonyms: 2,5-Methano-5H-indeno[5,4-c]oxepin-5a-propionic acid, 1,2a,3,5aa,6,7,7a,8,9,10,10aa,10bb-dodecahydro-7ab-methyl-3,8-dioxo- (7CI);2,5-Methano-5H-indeno[5,4-c]oxepin-5a-propionic acid, 1,2a,3,5aa,6,7,7a,8,9,10,10bb-dodecahydro-7ab-methyl-3,8-dioxo- (8CI)