Exploring 14379. To explore a different substance…

{1-[2-(4-Ethyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)ethyl]-4-[phenyl(propanoyl)amino]piperidin-4-yl}methyl methyl carbonate
 14379  C22H32N6O5  460.527
 Fentanyl
 InChI=1S/C22H32N6O5/c1-4-19(29)28(18-9-7-6-8-10-18)22(17-33-21(31)32-3)11-13-25(14-12-22)15-16-27-20(30)26(5-2)23-24-27/h6-10H,4-5,11-17H2,1-3H3
 ALZJLPLCVLHNKW-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(C1(CCN(CC1)CCn1nnn(c1=O)CC)COC(=O)OC)c1ccccc1