InChI=1S/C12H16N2O3S/c13-9(6-8-4-2-1-3-5-8)11(15)14-10(7-18)12(16)17/h1-5,9-10,18H,6-7,13H2,(H,14,15)(H,16,17)/t9-,10-/m0/s1