2H-1,4-Benzoxazin-3(4H)-one, 6-chloro-2-phenyl-4-(2-(1-pyrrolidinyl)ethyl)-, monohydrochloride 57462-72-3 6-Chloro-2-phenyl-4-(2-(1-pyrrolidinyl)ethyl)-2H-1,4-benzoxazin-3(4H)-one monohydrochloride