Using Br[Mg]c1ccccc1, CCOC(=O)c1cc(C=O)c2ccccn2c1=O to produce CCOC(=O)c1cc(C(O)c2ccccc2)c2ccccn2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.