Using O=C(O)[C@@H]1C[C@H]1C(=O)O, Nc1cc(NC(=O)c2c(Cl)cccc2Cl)ccn1 to produce O=C(Nc1ccnc(NC(=O)[C@@H]2C[C@H]2C(=O)O)c1)c1c(Cl)cccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.