InChI=1S/C16H14O11/c17-7-2-1-5-3-6(12-14(11(5)26-7)24-4-23-12)25-16-10(20)8(18)9(19)13(27-16)15(21)22/h1-3,8-10,13,16,18-20H,4H2,(H,21,22)