InChI=1/C20H17N2O5S/c23-28(24,18-4-5-19-20(13-18)26-11-10-25-19)22-16-2-1-3-17(12-16)27-14-15-6-8-21-9-7-15/h1-9,12-13H,10-11,14H2/q-1 C7CE3F348D40ACCF