Using Br[Mg]C1CC1, COc1ccc(N2CCCn3c2nc2c(Cl)ccc(C=O)c23)c(Cl)c1 to produce COc1ccc(N2CCCn3c2nc2c(Cl)ccc(C(O)C4CC4)c23)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.