Chiral ruthenium(II) complex &Dgr;‐[Ru(bpy)2(o‐FMPIP)] (bpy = bipyridine, o‐FMPIP = 2‐(2′‐trifluoromethyphenyl) imidazo[4,5‐f][1,10]phenanthroline) as potential apoptosis inducer via DNA damage