InChI=1S/C30H30O12/c1-12(2)20(32)19-21(33)18-15(11-17(31)40-25(18)14-9-10-30(3,4)42-26(14)19)13-7-5-6-8-16(13)39-29-24(36)22(34)23(35)27(41-29)28(37)38/h5-12,22-24,27,29,33-36H,1-4H3,(H,37,38)