2,4-Imidazolidinedione, 5,5-diphenyl-3-(3-(4-phenyl-1-piperidinyl)propyl)- 3-(3-(4-Phenyl-1-piperidyl)propyl)-5,5-diphenylhydantoin 5,5-Diphenyl-3-(3-(4-phenyl-1-piperidinyl)propyl)-2,4-imidazolidinedione 56079-61-9 MA 1598