InChI=1S/C12H18O8/c1-6(10(15)16)4-8(12(19)20)5-7(11(17)18)2-3-9(13)14/h6-8H,2-5H2,1H3,(H,13,14)(H,15,16)(H,17,18)(H,19,20)/t6-,7+,8+/m0/s1