Using O=C1OC(Br)c2ccccc21, O=C([O-])Cc1ccccc1Nc1c(Cl)cccc1Cl to produce O=C(Cc1ccccc1Nc1c(Cl)cccc1Cl)OC1OC(=O)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.