Using CCOC(=O)CBr, CC(=O)c1ccc(OC2CCN(C(=O)OC(C)(C)C)CC2)cc1F to produce CCOC(=O)CCC(=O)c1ccc(OC2CCN(C(=O)OC(C)(C)C)CC2)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.