InChI=1S/C15H17N3O5/c1-8(19)13(16)14-17-11(15(23)18(14)7-12(21)22)6-9-2-4-10(20)5-3-9/h2-6,8,13,19-20H,7,16H2,1H3,(H,21,22)/b11-6-/t8-,13+/m1/s1