Synonyms: 1,4,6-Metheno-1H-indene-1-aceticacid, octahydro-6,8-dihydroxy-a,3a,5-trimethyl-, [1R-[1a,1(R*),3ab,4a,5a,6b,7ab,8S*]]-;1,4,6-Methenoindan-1-acetic acid, hexahydro-6,8-dihydroxy-a,3a,5-trimethyl- (8CI);Dihydrometasantonic acid; Metasantonic acid, dihydro-