InChI=1/C16H26O7/c1-5-16(4,8-6-7-9(2)3)23-12-10(17)13(14(19)20)22-15(21)11(12)18/h5,7,10-13,15,17-18,21H,1,6,8H2,2-4H3,(H,19,20)/t10-,11+,12-,13-,15+,16?/s2