Using Cc1c(Cl)cc(C(=O)NCC2CCN(C(=O)OC(C)(C)C)CC2)c(=O)n1C(C)C to produce Cc1c(Cl)cc(C(=O)NCC2CCNCC2)c(=O)n1C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.