Methyl (2Z)-2-{(2Z)-3-[(cyclo-pentyl-idene)amino]-4-oxo-2-phenyl-imino-1,3-thia-zol-idin-5-yl-idene}acetate.

In the title compound, C17H17N3O3S, the thia-zole ring is nearly planar [maximum deviation = 0.015†(1)†à for the ring N atom] and the cyclo-pentane ring has a twist conformation. The mol-ecular conformation is stabilized by a hypervalent inter-action between the S atom and the ester group carbonyl O atom, with an S⋯O distance of 2.7931†(10)†à . In the crystal, C-H⋯O inter-actions generate chains of mol-ecules propagating along [110] and π-π stacking inter-actions [centroid-centroid distance = 3.4677†(7)†à ] between the thia-zole rings organize these chains into (001) layers.