InChI=1S/C17H18O8/c1-23-11-6-9(2-4-10(11)18)3-5-14(19)24-12-7-17(22)8-13(15(12)20)25-16(17)21/h2-6,12-13,15,18,20,22H,7-8H2,1H3/b5-3+/t12-,13-,15-,17+/m1/s1