Exploring 8484. To explore a different substance…

N-{1-[2-(2,4-Difluorophenyl)-2-hydroxyethyl]piperidin-4-yl}-N-phenylpropanamide
 8484  C22H26F2N2O2  388.451
 Fentanyl
 InChI=1S/C22H26F2N2O2/c1-2-22(28)26(17-6-4-3-5-7-17)18-10-12-25(13-11-18)15-21(27)19-9-8-16(23)14-20(19)24/h3-9,14,18,21,27H,2,10-13,15H2,1H3
 WLJHFQUKZHFDPP-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(c1ccccc1)C1CCN(CC1)CC(c1ccc(cc1F)F)O