Amino Acid Complexation to a Cobalt(III) Complex of Optically Active (2R,5R,8R,11R)-2,5,8,11-Tetraethyl-1,4,7,10-tetra-azacyclododecane (L). Preparation, Characterization, and Structure Determinations of (Co(III)((R)- or (S)-alaO)L)Br