InChI=1S/C13H17N2O7P/c1-7-2-3-9-8(4-7)14-6-15(9)13-12(17)11(16)10(22-13)5-21-23(18,19)20/h2-4,6,10-13,16-17H,5H2,1H3,(H2,18,19,20)/t10-,11-,12-,13+/m1/s1