1,4-Dihydro-6,7-dimethoxy-4-((dimethylamino)methylene)-3(2H)-isoquinolinone 3(2H)-Isoquinolinone, 1,4-dihydro-6,7-dimethoxy-4-((dimethylamino)methylene)- 4-Dimethylaminomethylene-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline-3-one 78893-39-7