InChI=1S/C17H18O8/c1-23-12-6-9(2-4-10(12)18)3-5-14(20)25-15-11(19)7-17(22)8-13(15)24-16(17)21/h2-6,11,13,15,18-19,22H,7-8H2,1H3/b5-3+/t11-,13-,15-,17+/m1/s1