InChI=1S/C23H22N2O7/c1-30-19(28)25-14-11(3-4-12-15(14)32-10-31-12)23-13-16(26)21(29)9-20(6-7-22(21,23)25)5-2-8-24(17(13)27)18(20)23/h3-4,13,18,29H,2,5-10H2,1H3/t13-,18-,20+,21+,22+,23-/m0/s1