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