Using COc1cc(C(=O)c2c(C)c(NC(=O)OC(C)(C)C)c3ccccn23)ccc1[N+](=O)[O-], O=C([O-])O to produce COc1cc(C(=O)c2c(C)c(N(C)C(=O)OC(C)(C)C)c3ccccn23)ccc1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.