1,5-Dimethyl-3,3-diphenyl-2-ethylidenepyrrolidine 2-Et-1,5-Dime-3,3-DPP 2-Ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine 30223-73-5 57195-65-0 EDDP Eddp-3,3 Pyrrolidine, 2-ethylidene-1,5-dimethyl-3,3-diphenyl-