InChI=1/C19H21NO7S/c1-13-2-4-14(5-3-13)27-15-6-8-16(9-7-15)28(24,25)17-10-11-26-12-19(17,22)18(21)20-23/h2-9,17,22-23H,10-12H2,1H3,(H,20,21)/t17-,19-/m1/s1/f/h20H 1F3673551E9B51D0