InChI=1S/C25H28O18/c26-4-11-15(33)16(34)18(36)22(41-11)13-10(31)3-9(30)12(14(32)5-1-7(28)8(29)2-6(5)27)21(13)42-25-20(38)17(35)19(37)23(43-25)24(39)40/h1-3,11,15-20,22-23,25-31,33-38H,4H2,(H,39,40)