Using COc1n[nH]c(N2C(=O)c3ccccc3C2=O)c1Cc1cccc(Cl)c1Cl to produce COc1[nH]nc(N)c1Cc1cccc(Cl)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.