Exploring Indapyrophenidone. To explore a different substance…

Indapyrophenidone
1-(2,3-Dihydro-1H-inden-5-yl)-2-phenyl-2-(pyrrolidin-1-yl)ethan-1-one
 653  C21H23NO  305.413
 InChI=1S/C21H23NO/c23-21(19-12-11-16-9-6-10-18(16)15-19)20(22-13-4-5-14-22)17-7-2-1-3-8-17/h1-3,7-8,11-12,15,20H,4-6,9-10,13-14H2
 JFDZZTSFBTYYDF-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 O=C(C(c1ccccc1)N1CCCC1)c1ccc2c(c1)CCC2