InChI=1S/C13H15N2O8P/c16-11-6-13(23-12(11)7-22-24(19,20)21)14-4-3-8-5-9(15(17)18)1-2-10(8)14/h1-5,11-13,16H,6-7H2,(H2,19,20,21)/t11-,12+,13+/m0/s1