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