Using CC1(N)CCN(C[C@@H]2CN3C(=O)CCc4ccc(=O)n2c43)CC1, O=C([O-])O to produce CC1(N=C=O)CCN(C[C@@H]2CN3C(=O)CCc4ccc(=O)n2c43)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.