Using Cn1cc(Nc2ncc(Cl)c(NC3CCC4(CC3)CCN(C(=O)OC(C)(C)C)CC4)n2)cn1 to produce Cn1cc(Nc2ncc(Cl)c(NC3CCC4(CCNCC4)CC3)n2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.