Using CC(C)(C)ONC(=O)N1CCC(Nc2ncccc2C(=O)Nc2cccc(Cl)c2)CC1 to produce O=C(Nc1cccc(Cl)c1)c1cccnc1NC1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.