InChI=1/C20H20N2O8/c1-3-28-19(26)16-13(9-29-18(25)12-6-5-11(23)8-14(12)24)21-20(27)22-17(16)15-7-4-10(2)30-15/h4-8,17,23-24H,3,9H2,1-2H3,(H2,21,22,27)/t17-/m0/s1/f/h21-22H AD73B18DD7A45059