Using CC(=O)Nc1nc(CCc2ccc(COC(=O)NNC(=O)OC(C)(C)C)c(F)c2)cs1 to produce CC(=O)Nc1nc(CCc2ccc(COC(=O)NN)c(F)c2)cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.