Showing structure for 5-{[(1r)-6,7-dimethoxy-2-methyl-3,4-dihydro-1h-isoquinolin-1-yl]methyl}-2-{[(1r)-6-methoxy-1-[(4-methoxyphenyl)methyl]-2-methyl-3,4-dihydro-1h-isoquinolin-7-yl]oxy}phenol