InChI=1S/C16H20O12/c17-2-1-3-26-15(25)6-4-7(18)9(19)8(5-6)27-16-12(22)10(20)11(21)13(28-16)14(23)24/h4-5,10-13,16-22H,1-3H2,(H,23,24)