InChI=1S/C16H20O12/c1-5(17)4-26-15(25)6-2-7(18)9(19)8(3-6)27-16-12(22)10(20)11(21)13(28-16)14(23)24/h2-3,5,10-13,16-22H,4H2,1H3,(H,23,24)