InChI=1S/C13H16N2O5S/c1-15-5-4-10-9-3-2-8(16)6-11(9)14-13(10)12(15)7-20-21(17,18)19/h2-3,6,12,14,16H,4-5,7H2,1H3,(H,17,18,19)