InChI=1S/C30H28O12/c31-18-7-1-16(2-8-18)5-12-21(33)20-11-13-22(26(36)25(20)35)41-30-29(39)28(38)27(37)23(42-30)15-40-24(34)14-6-17-3-9-19(32)10-4-17/h1-14,23,27-32,35-39H,15H2/b12-5+,14-6+/t23-,27-,28+,29-,30-/m1/s1