Using CCCCN1CCNC(=O)C1=O, COC(=O)C(Br)c1ccccc1 to produce CCCCN1CCN(C(C(=O)OC)c2ccccc2)C(=O)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.