InChI=1S/C15H17N3O5/c1-2-17-8-9-18(13(20)12(17)19)15(23)16-11(14(21)22)10-6-4-3-5-7-10/h3-7,11H,2,8-9H2,1H3,(H,16,23)(H,21,22)/t11-/m1/s1