InChI=1S/C17H18O10/c1-5-2-6-10(7(18)3-5)8(19)4-9(11(6)20)26-17-14(23)12(21)13(22)15(27-17)16(24)25/h2-4,12-15,17-23H,1H3,(H,24,25)