Synonyms: [(4S)-4,4a,5,6,7,8-Hexahydro-3,4aβ,5β-trimethyl-8-oxonaphtho[2,3-b]furan-4β-yl]2-methylpropanoate;2-Methylpropanoic acid [(4S)-4,4a,5,6,7,8-hexahydro-3,4aβ,5β-trimethyl-8-oxonaphtho[2,3-b]furan-4β-yl] ester;6β-Isobutyryloxy-9,10-didehydrofuranoeremophilan-1-one