InChI=1S/C21H25NO6S/c1-2-14-22-15-18(28-29(24,25)26)16-27-21-11-7-6-10-19(21)20(23)13-12-17-8-4-3-5-9-17/h2-11,18,22H,1,12-16H2,(H,24,25,26)