Using COC(=O)c1ccc(C2(NC(=O)c3cc(Cl)cnc3N3CCCC3c3ccccc3)CC2)cc1 to produce O=C(O)c1ccc(C2(NC(=O)c3cc(Cl)cnc3N3CCCC3c3ccccc3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.