Using COC(=O)c1ccccc1C=C1CCN(C(=O)OC(C)(C)C)CC1 to produce COC(=O)c1ccccc1CC1CCN(C(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.