Using CCOC(=O)c1cc(-c2nnn[nH]2)c2ccn(C3CC3)c2c1 to produce O=C(O)c1cc(-c2nnn[nH]2)c2ccn(C3CC3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.