1 Ordered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China.
In the title compound, C(16)H(18)N(2)O(8)S, derived from ranelic acid, there is a highly substituted thio-phene ring. The crystal structure involves inter-molecular C-H⋯O and C-H⋯S hydrogen bonds.