Exploring 3136. To explore a different substance…

N-(2-Fluorophenyl)-N-{1-[2-(1H-pyrazol-1-yl)ethyl]-4-(pyridin-2-yl)piperidin-4-yl}propanamide
 3136  C24H28FN5O  421.51
 Fentanyl
 InChI=1S/C24H28FN5O/c1-2-23(31)30(21-9-4-3-8-20(21)25)24(22-10-5-6-13-26-22)11-16-28(17-12-24)18-19-29-15-7-14-27-29/h3-10,13-15H,2,11-12,16-19H2,1H3
 HTAVGYGJASJKIW-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(C1(CCN(CC1)CCn1cccn1)c1ccccn1)c1ccccc1F