Everolimus O-Ethyl Impurity

Chemical Name:  (1R,9S,12S,15R,16E,18R,19R,21R,23S,24E,26E,28E,30S,32S,35R)-30-Ethoxy-1,18-Dihydroxy-12-((1R)-2-[(1S,3R,4R)-4-(2-Hydroxyethoxy)-3-Methoxycyclohexy]-1-methylethyl)-19-methoxy-15,17,21,23,29,35-hexamethyl-11,36-dioxa-4-aza-tricyclo[30.3.1.04.2]-hexatriaconta-16,24,26,28-tetraene-2,3,10,14,20-pentaone-16-o-ethyl-40-o-(2-hydroxyethyl)-rapamycin

Smile: OCCO[C@H]1[C@H](OC)C[C@H](C[C@@H](C)[C@@H]2CC([C@H](C)/C=C(C)/[C@@H](O)[C@@H](OC)C([C@H](C)C[C@H](C)/C=C/C=C/C=C(C)/[C@@H](OCC)C[C@H]3O[C@](C(C(N4[C@H](C(O2)=O)CCCC4)=O)=O)(O)[C@H](C)CC3)=O)=O)CC1