1-methyl-3-oxo-7-pyridin-4-yl-5,6,7,8-tetrahydro-2H-isoquinoline-4-carbonitrile
1-methyl-3-oxo-7-(4-pyridyl)-5,6,7,8-tetrahydro-2H-isoquinoline-4-carbonitrile
3-keto-1-methyl-7-(4-pyridyl)-5,6,7,8-tetrahydro-2H-isoquinoline-4-carbonitrile