The dodecanuclear complexes formed between manganese ions and carboxylate anionic ligands are the single molecule magnets (SMMs) with greatest synthetic accessibility and richness of magnetic properties. In this work, we describe a recently synthesized chiral SMM which presents both spontaneous magnetization and optical activity. This objective has been targeted because of the possibility of observing new phenomena related with the synergy between structural chirality, optical activity, and magnetic ordering.