3-Ethyl-5-[2-(3-ethyl-2(3H)-benzothiazolinylidene)-ethylidene]-rhodanine

3-Ethyl-5-[2-(3-ethyl-3H-benzoxazol-2-ylidene)ethylidene]-2-thioxo-4-thiazolidinone

3-ethyl-5-[(3-ethyl-(3H)-benzoxazol-2-ylidene)ethylidene]-2-thioxothiazolidin-4-one