InChI=1/C21H21NO5S/c1-21(2)18(14-6-9-16(10-7-14)28(3,24)25)19(20(23)27-21)26-17-11-8-15(12-22-17)13-4-5-13/h6-13H,4-5H2,1-3H3 9805F90571463072