InChI=1S/C21H20O15/c22-6-4-8(24)13(27)15(29)10(6)12(26)7(23)3-5-1-2-9(14(28)11(5)25)35-21-18(32)16(30)17(31)19(36-21)20(33)34/h1-2,4,16-19,21-22,24-25,27-32H,3H2,(H,33,34)