InChI=1S/C21H20O15/c22-6-4-10(35-21-18(32)16(30)17(31)19(36-21)20(33)34)14(28)15(29)11(6)13(27)9(25)3-5-1-7(23)12(26)8(24)2-5/h1-2,4,16-19,21-24,26,28-32H,3H2,(H,33,34)