InChI=1S/C16H18O9/c1-2-3-7-4-9-10(23-6-22-9)5-8(7)24-16-13(19)11(17)12(18)14(25-16)15(20)21/h2,4-5,11-14,16-19H,1,3,6H2,(H,20,21)