InChI=1S/C16H16O8/c1-22-10-6-9-12(16(21,14(10)19)15(20)23-2)13(18)11-7(17)4-3-5-8(11)24-9/h3-5,10,14,17,19,21H,6H2,1-2H3/t10-,14+,16+/m0/s1