InChI=1S/C16H22O8/c1-15(5-3-6-7(4-5)16(6,15)2)14(22)24-13-10(19)8(17)9(18)11(23-13)12(20)21/h5-11,13,17-19H,3-4H2,1-2H3,(H,20,21)