Exploring 4387. To explore a different substance…

tert-Butyl 5-(dimethylcarbamoyl)imidazo[1,5-a]quinoline-3-carboxylate
 4387  C19H21N3O3  339.388
 InChI=1S/C19H21N3O3/c1-19(2,3)25-18(24)16-15-10-13(17(23)21(4)5)12-8-6-7-9-14(12)22(15)11-20-16/h6-11H,1-5H3
 JAFCXUVKFIWEFT-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CN(C(=O)c1cc2c(ncn2c2c1cccc2)C(=O)OC(C)(C)C)C