InChI=1S/C16H22O7/c1-3-4-9-5-6-10(11(7-9)21-2)22-16-15(20)14(19)13(18)12(8-17)23-16/h3,5-7,12-20H,1,4,8H2,2H3/t12-,13-,14+,15-,16-/m1/s1