InChI=1S/C21H20O15/c22-6-3-7(23)11(8(24)4-6)13(28)9(25)1-5-2-10(26)18(15(30)12(5)27)35-21-17(32)14(29)16(31)19(36-21)20(33)34/h2-4,14,16-17,19,21-24,26-27,29-32H,1H2,(H,33,34)