2(1H)-isoquinolinecarboxaldehyde, 3,4-dihydro-6,7-dimethoxy-1-methylene- 6,7-dimethoxy-1-methylene-3,4-dihydroisoquinoline-2(1H)-carbaldehyde InChI=1/C13H15NO3/c1-9-11-7-13(17-3)12(16-2)6-10(11)4-5-14(9)8-15/h6-8H,1,4-5H2,2-3H