IUPAC:4-[(1E)-2-[(1S,4aS,8aS)-5,5,8a-trimethyl-2-methylidene-decahydronaphthalen-1-yl]ethenyl]-5-hydroxy-2,5-dihydrofuran-2-one
IUPAC:4-[(1E)-2-[(1S,4aS,8aS)-5,5,8a-trimethyl-2-methylidene-decahydronaphthalen-1-yl]ethenyl]-5-hydroxy-2,5-dihydrofuran-2-one