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