Using CCOC(=O)C1CCCN(c2ccc(C(=O)N3c4ccccc4[C@H](N(C(C)=O)c4ccc(Cl)cc4)C[C@@H]3C)cc2)C1 to produce O=C(O)C1CCCNC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.