(4aS,8aS)-4,4,7,8a-tetramethyl-8-[(3E,7E)-4,8,12-trimethyltrideca-3,7,11-trienyl]-1,2,3,4a,5,6-hexahydronaphthalene 生成 (3S,4aR,6aR,6bS,8aS,12aS,14aR,14bR)-4,4,6a,6b,9,9,12a,14b-Octamethyl-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydro-picen-3-ol