InChI=1S/C27H26N2O6/c30-20-13-11-18(12-14-20)26(33)29-22-16-28-15-3-6-24(22)35-27(34)19-9-7-17(8-10-19)25(32)21-4-1-2-5-23(21)31/h1-2,4-5,7-14,22,24,28,30-31H,3,6,15-16H2,(H,29,33)/t22-,24-/m1/s1