Exploring Benzoylfentanyl. To explore a different substance…

Benzoylfentanyl
N-Phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]benzamide
 818 ·  C26H28N2O ·  384.513
 Fentanyl
 InChI=1S/C26H28N2O/c29-26(23-12-6-2-7-13-23)28(24-14-8-3-9-15-24)25-17-20-27(21-18-25)19-16-22-10-4-1-5-11-22/h1-15,25H,16-21H2
 BJPDWVPQDSVQKD-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 O=C(N(c1ccccc1)C1CCN(CC1)CCc1ccccc1)c1ccccc1