InChI=1/C16H18N2O3S/c1-11-8-9-13(3)15(10-11)22(20,21)18-17-16(19)14-7-5-4-6-12(14)2/h4-10,18H,1-3H3,(H,17,19)/f/h17H FA3EBBCE0AF40C8F