InChI=1S/C21H30O7S/c1-19-7-5-17-15(16(19)6-8-21(19,24)9-10-22)4-3-13-11-14(28-29(25,26)27)12-18(23)20(13,17)2/h10,12-13,15-17,24H,3-9,11H2,1-2H3,(H,25,26,27)/t13?,15?,16?,17?,19-,20-,21-/m0/s1