Using CN, CCOc1c(N2CCC3(C2)CN(C(=O)Nc2ncc(Cl)s2)c2ccc(Cl)cc23)c(=O)c1=O to produce CNc1c(N2CCC3(C2)CN(C(=O)Nc2ncc(Cl)s2)c2ccc(Cl)cc23)c(=O)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.