InChI=1S/C21H31O7S/c1-12(22)21(24)9-6-16-18-15(5-8-20(16,21)3)19(2)7-4-14(23)10-13(19)11-17(18)28-29(25,26)27/h11,14-18,24H,4-10H2,1-3H3,(H,25,26,27)/t14?,15?,16?,17?,18?,19-,20-,21-/m0/s1