InChI=1S/C18H22O9/c1-8(2)3-4-9-7-10(16(22)23)5-6-11(9)26-18-14(21)12(19)13(20)15(27-18)17(24)25/h3,5-7,12-15,18-21H,4H2,1-2H3,(H,22,23)(H,24,25)