Using CCOC(=O)CSc1nnc(C(F)F)n1-c1ccc(CC)c2ccccc12 to produce CCc1ccc(-n2c(SCC(=O)O)nnc2C(F)F)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.