Exploring 14392. To explore a different substance…

{1-[2-(1,3-Dioxo-1,3-dihydro-2H-isoindol-2-yl)ethyl]-4-[phenyl(propanoyl)amino]piperidin-4-yl}methyl methyl carbonate
 14392  C27H31N3O6  493.552
 Fentanyl
 InChI=1S/C27H31N3O6/c1-3-23(31)30(20-9-5-4-6-10-20)27(19-36-26(34)35-2)13-15-28(16-14-27)17-18-29-24(32)21-11-7-8-12-22(21)25(29)33/h4-12H,3,13-19H2,1-2H3
 NDSYZFNUDZPTNM-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(C1(CCN(CC1)CCN1C(=O)c2c(C1=O)cccc2)COC(=O)OC)c1ccccc1