Exploring 14366. To explore a different substance…

{4-[(2-Methoxypropanoyl)(phenyl)amino]-1-(2-phenylethyl)piperidin-4-yl}methyl 2-methoxypropanoate
 14366  C28H38N2O5  482.612
 Fentanyl
 InChI=1S/C28H38N2O5/c1-22(33-3)26(31)30(25-13-9-6-10-14-25)28(21-35-27(32)23(2)34-4)16-19-29(20-17-28)18-15-24-11-7-5-8-12-24/h5-14,22-23H,15-21H2,1-4H3
 KOOSDBJQDYAFAS-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 COC(C(=O)N(C1(CCN(CC1)CCc1ccccc1)COC(=O)C(OC)C)c1ccccc1)C