Synonyms: 2H-Cyclopropa[4,5]cyclopenta[1,2-b]pyran,2-ethenyloctahydro-2,5,6b-trimethyl-5-(4-methyl-3-pentenyl)-,(2R,4aS,5S,5aS,6aR,6bR)-rel-(-)- (9CI);2H-Cyclopropa[4,5]cyclopenta[1,2-b]pyran,2-ethenyloctahydro-2,5,6b-trimethyl-5-(4-methyl-3-pentenyl)-, (2a,4ab,5a,5ab,6ab,6bb)-(-)-; Sphaeropyrane