Using [N-]=[N+]=[N-], CCOC(=O)[C@@]1(F)[C@@H]2C[C@H](OS(=O)(=O)C(F)(F)F)[C@@](NC(=O)OC(C)(C)C)(C(=O)OCC)[C@@H]21 to produce CCOC(=O)[C@@]1(F)[C@@H]2C[C@@H](N=[N+]=[N-])[C@@](NC(=O)OC(C)(C)C)(C(=O)OCC)[C@@H]21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.