Using COC(=O)c1cccc(NC(=O)c2cccc(-c3ccccn3)c2)c1O to produce COC(=O)c1cccc2nc(-c3cccc(-c4ccccn4)c3)oc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.