InChI=1S/C20H29NO6S/c22-18-13-12-17(16-19(18)27-28(24,25)26)10-6-4-2-1-3-5-7-11-20(23)21-14-8-9-15-21/h6,10,12-13,16,22H,1-5,7-9,11,14-15H2,(H,24,25,26)/b10-6+