Using COc1cccc2c1[C@]13CCN[C@H](C2)[C@@H]1CCC(=O)C3, O=C(Cl)C1CCC1 to produce COc1cccc2c1[C@]13CCN(C(=O)C4CCC4)[C@H](C2)[C@@H]1CCC(=O)C3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.