6-(4-(N-(2-(3-(2-cyanophenoxy)-2-hydroxypropylamino)-2-methylpropyl)carbamoylmethoxy-3-chlorophenyl))-4,5-dihydro-3(2H)-pyridazinone
6-(4-(n-(2-(3-(2-cyanophenoxy)-2-hydroxypropylamino)-2-methylpropyl)carbamoylmethoxy-3-chlorophenyl))-4,5-dihydro-3(2h)-pyridazinone