Exploring 14364. To explore a different substance…

Methyl {1-(2-phenylethyl)-4-[phenyl(propanoyl)amino]piperidin-4-yl}methyl carbonate
 14364  C25H32N2O4  424.533
 Fentanyl
 InChI=1S/C25H32N2O4/c1-3-23(28)27(22-12-8-5-9-13-22)25(20-31-24(29)30-2)15-18-26(19-16-25)17-14-21-10-6-4-7-11-21/h4-13H,3,14-20H2,1-2H3
 YNJUKEBTCNKILT-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 COC(=O)OCC1(CCN(CC1)CCc1ccccc1)N(c1ccccc1)C(=O)CC