1,4-Benzenedicarboxamide, N,N'-bis((1-methyl-4-phenyl-4-piperidinyl)methyl)-, dihydrochloride 10593-62-1 N,N'-(1-Methyl-4-phenyl-4-piperidylmethyl)terephthalamide dihydrochloride Terephthalamide, N,N'-bis(1-methyl-4-phenyl-4-piperidylmethyl)-, dihydrochloride