InChI=1S/C11H14N2O9/c14-4-5(15)7(9(18)19)22-10(6(4)16)21-2-3-1-12-11(20)13-8(3)17/h1,4-7,10,14-16H,2H2,(H,18,19)(H2,12,13,17,20)