(-)-6,7,8,9-Tetrahydro-2,12-dimethoxy-7-methyl-5H-dibenz(d,f)azonin-1-ol hydrochloride 5H-Dibenz(d,f)azonin-1-ol, 6,7,8,9-tetrahydro-2,12-dimethoxy-7-methyl-, hydrochloride, (-)- 79989-20-1