N-[4-[2-(6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl)ethyl]phenyl]-2-[(4-methylbenzoyl)amino]benzamide
N-[4-[2-(6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl)ethyl]phenyl]-2-[[(4-methylphenyl)-oxomethyl]amino]benzamide
N-[4-[2-(6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl)ethyl]phenyl]-2-[(4-methylphenyl)carbonylamino]benzamide