Exploring Zopiclone. To explore a different substance…

Zopiclone
6-(5-Chloropyridin-2-yl)-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-yl 4-methylpiperazine-1-carboxylate
 3359  C17H17ClN6O3  388.808
 InChI=1S/C17H17ClN6O3/c1-22-6-8-23(9-7-22)17(26)27-16-14-13(19-4-5-20-14)15(25)24(16)12-3-2-11(18)10-21-12/h2-5,10,16H,6-9H2,1H3
 GBBSUAFBMRNDJC-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CN1CCN(CC1)C(=O)OC1c2nccnc2C(=O)N1c1ccc(cn1)Cl