Ethyl 2-(pyridine-4-carboxamido)-4,5,6,7-tetra­hydro-1-benzothio­phene-3-carboxyl­ate

In the title compound, C(17)H(18)N(2)O(3)S, the dihedral angles between the thio­phene ring and the ethyl ester group and the pyridine-4-carboxamide unit are 7.1 (2) and 9.47 (11)°, respectively. An intra­molecular N—H⋯O hydrogen bond generates an S(6) ring. In the crystal, inversion dimers linked by pairs of C—H⋯O hydrogen bonds between the tetra­hydro-1-benzothio­phene and the pyridine-4-carboxamide residues generate R (2) (2)(16) loops. There exists positional disorder in three methelene groups of the cyclo­hexane ring and the terminal C atom of the ethyl ester side chain in a 0.691 (14):0.309 (14) occupancy ratio.