InChI=1S/2C13H17N3O4S.Mg/c2*1-10-12(14(2)9-21(18,19)20)13(17)16(15(10)3)11-7-5-4-6-8-11;/h2*4-8H,9H2,1-3H3,(H,18,19,20);/q;;+2/p-2