Showing structure for (1r)-1-{[(2s,3r,11bs)-3-ethyl-10-hydroxy-9-methoxy-1h,2h,3h,4h,6h,7h,11bh-pyrido[2,1-a]isoquinolin-2-yl]methyl}-1,2,3,4-tetrahydroisoquinoline-6,7-diol