Noun
diphenylmethylpiperazine (plural diphenylmethylpiperazines)
English Wikipedia has an article on:diphenylmethylpiperazineWikipedia
(organic chemistry) 1-(diphenylmethyl)piperazine, a piperazine derivative featuring a piperazine ring with a benzhydryl (diphenylmethyl) group bound to one of the nitrogens.