C=C1C[C@H]2O[C@H]([C@H]3[C@@H]2C(=C)[C@@H](O)C[C@@H]3C(C)C)[C@](C)(OC(=O)CCC)CCC1=O	[(1R,2R,4S,6R,7R,8R,9R)-4-hydroxy-9-methyl-3,13-dimethylidene-12-oxo-6-propan-2-yl-15-oxatricyclo[6.6.1.02,7]pentadecan-9-yl] butanoate