Using CCOC(=O)CCCCCCN1C(=O)CCc2nc(Br)c(Cl)nc21 to produce CCOC(=O)CCCCCCN1CCCc2nc(Br)c(Cl)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.