N-Benzyl-p-fluoro-isobutyrylfentanyl
1-(1-Benzylpiperidin-4-yl)-1-(4-fluorophenyl)-3-methylbutan-2-one
 1691  C23H28FNO  353.473
 Fentanyl
 InChI=1S/C23H28FNO/c1-17(2)23(26)22(19-8-10-21(24)11-9-19)20-12-14-25(15-13-20)16-18-6-4-3-5-7-18/h3-11,17,20,22H,12-16H2,1-2H3
 SIIBQPOAAFWJLP-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 O=C(C(c1ccc(cc1)F)C1CCN(CC1)Cc1ccccc1)C(C)C