InChI=1S/C28H21NO8/c1-9-4-5-12-19(21(9)30)23(32)14-8-15-18(26(35)20(14)22(12)31)17-13(24(33)27(15)37-3)7-11-6-10(2)29-28(36)16(11)25(17)34/h4-8,24,27,30,33-35H,1-3H3,(H,29,36)/t24-,27-/m0/s1