InChI=1/C18H17NO4S/c19-24(20,21)14-7-4-12(5-8-14)15-2-1-3-16(15)13-6-9-17-18(10-13)23-11-22-17/h4-10H,1-3,11H2,(H2,19,20,21)/f/h19H2 A4821DA1E63312CB