Gravar-mail: Crystal structure of (2Z)-2-{(5Z)-5-[3-fluoro-2-(4-phenyl­piperidin-1-yl)benzyl­idene]-4-oxo-3-(p-tol­yl)-1,3-thia­zolidin-2-yl­idene}-N-(p-tol­yl)ethane­thio­amide dimethyl sulfoxide monosolvate