InChI=1S/C21H41NO5S/c1-3-19(2)15-11-9-7-5-4-6-8-10-12-16-20(27-28(24,25)26)21(23)22-17-13-14-18-22/h19-20H,3-18H2,1-2H3,(H,24,25,26)