Exploring 14381. To explore a different substance…

{4-[Butanoyl(phenyl)amino]-1-[2-(2H-tetrazol-2-yl)ethyl]piperidin-4-yl}methyl butanoate
 14381  C23H34N6O3  442.554
 Fentanyl
 InChI=1S/C23H34N6O3/c1-3-8-21(30)29(20-10-6-5-7-11-20)23(18-32-22(31)9-4-2)12-14-27(15-13-23)16-17-28-25-19-24-26-28/h5-7,10-11,19H,3-4,8-9,12-18H2,1-2H3
 ZSLDLPSFBPSDRL-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCCC(=O)N(C1(CCN(CC1)CCn1nncn1)COC(=O)CCC)c1ccccc1