InChI=1S/C19H25NO7S/c21-18(10-15(19(22)23)9-13-5-2-1-3-6-13)20-11-14-7-4-8-17(16(14)12-20)27-28(24,25)26/h1-3,5-6,14-17H,4,7-12H2,(H,22,23)(H,24,25,26)