Using CCOC(=O)c1cn2c3c(c(F)c(F)cc3c1=O)CCN2C, CCOC(=O)CC#N to produce CCOC(=O)c1cn2c3c(c(C(C#N)C(=O)OCC)c(F)cc3c1=O)CCN2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.