Using O=C([O-])[O-], CCN(CC)C(=O)c1ccc(C(=C2CCNCC2)c2ccccc2)cc1 to produce CCN(CC)C(=O)c1ccc(C(=C2CCN(C)CC2)c2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.