Synonyms: 1,5-Cyclo-1,10-secocon-8-enin-2-one,(5R)- (8CI); 1,5-Cyclo-1,10-secocon-8-enin-2-one, (5b,10b)-; Spiro[9H-benz[4,5]indeno[1,7a-c]pyrrole-9,1'-cyclopentan]-2-one,1,2,2a,3,4,5,6,7,8,10,11,11a-dodecahydro-3,4,8-trimethyl-,(1'R,2aS,3S,5aR,8R,11bS)- (9CI); 10-Epineoconenone; Novoconenone;Spiro[9H-benz[4,5]indeno[1,7a-c]pyrrole-9,1'-cyclopentan]-2-one,1,2,2a,3,4,5,6,7,8,10,11,11a-dodecahydro-3,4,8-trimethyl-, [2aS-(2aa,3b,5aS*,8a,9b,11ba)]-