InChI=1S/C12H16N2O2S2.2Na/c15-11(13-4-6-17)9-2-1-3-10(8-9)12(16)14-5-7-18;;/h1-3,8,17-18H,4-7H2,(H,13,15)(H,14,16);;/q;2*+1/p-2