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