4-(4-Acetaminophenoxy)-1-methyl-4-phenylpiperidin [German] 78104-23-1 Acetamide, N-(4-((1-methyl-4-phenyl-4-piperidinyl)oxy)phenyl)- N-(4-((1-Methyl-4-phenyl-4-piperidinyl)oxy)phenyl)acetamide