InChI=1/C16H18N2O5S/c1-10-8-12(23-3)9-11(2)15(10)24(21,22)18-17-16(20)13-6-4-5-7-14(13)19/h4-9,18-19H,1-3H3,(H,17,20)/f/h17H 03047CC07C4C2DC4