Synonyms: (3ar,4s,6ar,8s,9as,9bs)-8-hydroxy-3,6-dimethylidene-2-oxodecahydro-2h-spiro[azuleno[4,5-b]furan-9,2'-oxiran]-4-yl 2-methylprop-2-enoate;AC1L4NB0;AC1Q5X1I;KST-1A0975;AR-1A3978;[(3aR,4S,6aR,8S,9aS,9bS)-8-hydroxy-3,6-dimethylidene-2-oxospiro[3a,4,5,6a,7,8,9a,9b-octahydroazuleno[4,5-b]furan-9,2'-oxirane]-4-yl] 2-methylprop-2-enoate