(R-biar)-12-benzoyloxy-6,7,8,9-tetrahydro-1,2,3,13,14-pentamethoxy-7,8-dimethyl-7-dibenzo(a,c)cyclooctenol
(r-biar)-12-benzoyloxy-6,7,8,9-tetrahydro-1,2,3,13,14-pentamethoxy-7,8-dimethyl-7-dibenzo(a,c)cyclooctenol