Exploring 14378. To explore a different substance…

{1-[2-(4-Ethyl-5-oxo-4,5-dihydro-1H-tetrazol-1-yl)ethyl]-4-[(2-methylpropanoyl)(phenyl)amino]piperidin-4-yl}methyl 2-methylpropanoate
 14378  C25H38N6O4  486.607
 Fentanyl
 InChI=1S/C25H38N6O4/c1-6-29-24(34)30(27-26-29)17-16-28-14-12-25(13-15-28,18-35-23(33)20(4)5)31(22(32)19(2)3)21-10-8-7-9-11-21/h7-11,19-20H,6,12-18H2,1-5H3
 IKQDWEDLDBIZTP-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCn1nnn(c1=O)CCN1CCC(CC1)(COC(=O)C(C)C)N(C(=O)C(C)C)c1ccccc1