Novel Cyano- and Amidino-Substituted Derivatives of Thieno[2,3-B]- and Thieno[3,2-B]Thiophene-2-Carboxanilides and Thieno[3′,2′:4,5]Thieno- and Thieno[2′,3′:4,5]Thieno [2,3-C]Quinolones: Synthesis, Photochemical Synthesis, Dna Binding, and Antitumor Evaluation