InChI=1S/C13H17N3O5/c14-9(6-11(15)18)12(19)16-10(13(20)21)5-7-1-3-8(17)4-2-7/h1-4,9-10,17H,5-6,14H2,(H2,15,18)(H,16,19)(H,20,21)