InChI=1S/C16H26O8/c1-4-16(3,22)7-5-6-9(2)14(21)24-15-13(20)12(19)11(18)10(8-17)23-15/h4,6,10-13,15,17-20,22H,1,5,7-8H2,2-3H3/b9-6-