Using CN(Cc1ccc(CCn2cnc3cc(-c4ccc(Cl)cc4)sc3c2=O)cc1)C(=O)OC(C)(C)C to produce CNCc1ccc(CCn2cnc3cc(-c4ccc(Cl)cc4)sc3c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.