N-Methyl norfentanyl
N-(1-Methylpiperidin-4-yl)-N-phenylpropanamide
 1682  C15H22N2O  246.348
 Fentanyl
 InChI=1S/C15H22N2O/c1-3-15(18)17(13-7-5-4-6-8-13)14-9-11-16(2)12-10-14/h4-8,14H,3,9-12H2,1-2H3
 PCMUWYHREXSXFM-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(c1ccccc1)C1CCN(CC1)C