Using CCOC(=O)CC(=O)[O-], CCOC(=O)C1NCCc2nc(CC)n(Cc3ccc(-c4ccccc4C(=O)OC(C)(C)C)cc3)c21 to produce CCOC(=O)CC(=O)N1CCc2nc(CC)n(Cc3ccc(-c4ccccc4C(=O)OC(C)(C)C)cc3)c2C1C(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.