p-Propanamidofentanyl
N-[1-(2-Phenylethyl)piperidin-4-yl]-N-(4-propanamidophenyl)propanamide
 11897  C25H33N3O2  407.548
 Fentanyl
 InChI=1S/C25H33N3O2/c1-3-24(29)26-21-10-12-22(13-11-21)28(25(30)4-2)23-15-18-27(19-16-23)17-14-20-8-6-5-7-9-20/h5-13,23H,3-4,14-19H2,1-2H3,(H,26,29)
 CUIGHYMWVBCYDN-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(c1ccc(cc1)NC(=O)CC)C1CCN(CC1)CCc1ccccc1