Using COC(=O)c1ccc(-c2n[nH]c(-c3ccccc3)n2)cc1 to produce O=C(O)c1ccc(-c2n[nH]c(-c3ccccc3)n2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.