tert-Butyl 2-{4-[phenyl(propanoyl)amino]piperidin-1-yl}propanoate
 8184  C21H32N2O3  360.49
 Fentanyl
 InChI=1S/C21H32N2O3/c1-6-19(24)23(17-10-8-7-9-11-17)18-12-14-22(15-13-18)16(2)20(25)26-21(3,4)5/h7-11,16,18H,6,12-15H2,1-5H3
 NNSTURPHWBUJLF-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(c1ccccc1)C1CCN(CC1)C(C(=O)OC(C)(C)C)C