Using COC(=O)C(CN1CCN(C(=O)OC(C)(C)C)CC1)NC(=O)OCc1ccccc1 to produce COC(=O)C(N)CN1CCN(C(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.