Using O=C(N[C@@H](Cc1ccc([N+](=O)[O-])cc1)C(=O)O)c1c(Cl)cccc1Cl, CC(C)O to produce CC(C)OC(=O)[C@H](Cc1ccc([N+](=O)[O-])cc1)NC(=O)c1c(Cl)cccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.