InChI=1S/C14H20N2O3S2/c1-11-4-6-12(7-5-11)21(18,19)16-9-2-3-13(16)14(17)15-8-10-20/h4-7,13,20H,2-3,8-10H2,1H3,(H,15,17)/t13-/m1/s1