Using CCOC(=O)CN[C@H]1CCN(c2ccc3c(NC(=O)CC4CCCCC4)c(Cl)ccc3n2)C1 to produce O=C(O)CN[C@H]1CCN(c2ccc3c(NC(=O)CC4CCCCC4)c(Cl)ccc3n2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.