4(3H)-Quinazolinone, 7-(3,4-dihydro-6,7-dimethoxy-1-isoquinolinyl)-2-methyl-3-(2-methylphenyl)- 7-(3,4-Dihydro-6,7-dimethoxy-1-isoquinolinyl)-2-methyl-3-(2-methylphenyl)-4(3H)-quinazolinone 74101-64-7