2-[(2R)-2-acetamido-2-phenylacetyl]-N-[2-[di(propan-2-yl)amino]ethyl]-6-phenylmethoxy-3,4-dihydro-1H-isoquinoline-1-carboxamide;tert-butyl 6-cyclohexyloxy-1-[2-[di(propan-2-yl)amino]ethylcarbamoyl]-3,4-dihydro-1H-isoquinoline-2-carboxylate;tert-butyl 1-[2-[di(propan-2-yl)amino]ethylcarbamoyl]-6-(4-methylphenoxy)-3,4-dihydro-1H-isoquinoline-2-carboxylate;(1-ethoxy-2-methyl-1-oxopropan-2-yl) 1-[2-[di(propan-2-yl)amino]ethylcarbamoyl]-6-phenylmethoxy-3,4-dihydro-1H-isoquinoline-2-carboxylate;(1-methoxy-2-methyl-1-oxopropan-2-yl) 1-[2-[di(propan-2-yl)amino]ethylcarbamoyl]-6-phenylmethoxy-3,4-dihydro-1H-isoquinoline-2-carboxylate