Using O=C(O)COCc1ccc(Br)cc1, Nc1cccc(CNC(=O)OCc2ccccc2)c1 to produce O=C(COCc1ccc(Br)cc1)Nc1cccc(CNC(=O)OCc2ccccc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.