Exploring 14365. To explore a different substance…

{1-(2-Phenylethyl)-4-[phenyl(propanoyl)amino]piperidin-4-yl}methyl 2,2-dimethylpropanoate
 14365  C28H38N2O3  450.613
 Fentanyl
 InChI=1S/C28H38N2O3/c1-5-25(31)30(24-14-10-7-11-15-24)28(22-33-26(32)27(2,3)4)17-20-29(21-18-28)19-16-23-12-8-6-9-13-23/h6-15H,5,16-22H2,1-4H3
 QRCXYMGNANJACB-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(C1(CCN(CC1)CCc1ccccc1)COC(=O)C(C)(C)C)c1ccccc1