Exploring 4389. To explore a different substance…

tert-Butyl 5-[butyl(methyl)carbamoyl]imidazo[1,5-a]quinoline-3-carboxylate
 4389  C22H27N3O3  381.468
 InChI=1S/C22H27N3O3/c1-6-7-12-24(5)20(26)16-13-18-19(21(27)28-22(2,3)4)23-14-25(18)17-11-9-8-10-15(16)17/h8-11,13-14H,6-7,12H2,1-5H3
 VMMFRPQQKTWRHM-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCCCN(C(=O)c1cc2c(ncn2c2c1cccc2)C(=O)OC(C)(C)C)C