Exploring 3-Ethylfentanyl. To explore a different substance…

3-Ethylfentanyl
N-[3-Ethyl-1-(2-phenylethyl)piperidin-4-yl]-N-phenylpropanamide
 1604  C24H32N2O  364.524
 Fentanyl
 InChI=1S/C24H32N2O/c1-3-21-19-25(17-15-20-11-7-5-8-12-20)18-16-23(21)26(24(27)4-2)22-13-9-6-10-14-22/h5-14,21,23H,3-4,15-19H2,1-2H3
 PQLVKUAUCQNNAZ-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(C1CCN(CC1CC)CCc1ccccc1)c1ccccc1