Using CC(C)Oc1ccc(-c2nc(-c3cccc4c(CCC(=O)OC(C)(C)C)c[nH]c34)no2)cc1Cl to produce CC(C)Oc1ccc(-c2nc(-c3cccc4c(CCC=O)c[nH]c34)no2)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.