(9aS,9bS)-9b-hydroxy-6,6,9a-trimethyl-1,3,5,5a,6,7,8,9,9a,9b-decahydrobenzo[e]-isobenzofuran-3,5-dione

(3aR,5aS,9aR,9bS)-6,6,9a-Trimethyl-1,3a,4,5a,6,7,9a,9b-octahydro-3H-naphtho[1,2-c]furan-5-one