(-)-1-Acetoxy-6-benzyl-2,12-dimethoxy-7-methyl-5,6,8,9-tetrahydro-7H-dibenz(d,f)azonine 5H-Dibenz(d,f)azonin-1-ol, 6,7,8,9-tetrahydro-2,12-dimethoxy-7-methyl-6-(phenylmethyl)-, acetate (ester), (-)- 79989-25-6