InChI=1S/C21H20O15/c22-5-1-4(2-6(23)10(5)25)17-14(29)11(26)9-8(34-17)3-7(24)18(12(9)27)35-21-16(31)13(28)15(30)19(36-21)20(32)33/h1-3,13-17,19,21-25,27-31H,(H,32,33)