Exploring Remifentanil bis ethyl ester. To explore a different substance…

Remifentanil bis ethyl ester
Ethyl 1-(3-ethoxy-3-oxopropyl)-4-[phenyl(propanoyl)amino]piperidine-4-carboxylate
 1698  C22H32N2O5  404.5
 Fentanyl
 InChI=1S/C22H32N2O5/c1-4-19(25)24(18-10-8-7-9-11-18)22(21(27)29-6-3)13-16-23(17-14-22)15-12-20(26)28-5-2/h7-11H,4-6,12-17H2,1-3H3
 DVSOIPUGVXQYKQ-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCOC(=O)C1(CCN(CC1)CCC(=O)OCC)N(c1ccccc1)C(=O)CC