Using COC(=O)CBr, CCCC(=O)c1ccc2nc(-c3ccccc3)oc2c1 to produce CCC(CC(=O)O)C(=O)c1ccc2nc(-c3ccccc3)oc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.