CC(=O)O[C@H](C[C@@H]1[C@@]2(C)CC[C@H]3[C@@](C)(CCC[C@]3(C)C=O)[C@@H]2C[C@@]1(C)C=O)c1ccoc1 [(1R)-2-[(2R,3R,3aS,5aS,6S,9aS,9bS)-2,6-diformyl-2,3a,6,9a-tetramethyl-3,4,5,5a,7,8,9,9b-octahydro-1H-cyclopenta[a]naphthalen-3-yl]-1-(furan-3-yl)ethyl] acetate