Showing structure for 4-[(r)-hydroxy[(1s)-7-hydroxy-6-methoxy-8-[(6-methoxy-2-methyl-3,4-dihydro-1h-isoquinolin-7-yl)oxy]-2-methyl-3,4-dihydro-1h-isoquinolin-1-yl]methyl]benzene-1,2-diol