Using C#Cc1cc(CNC(=O)C=Cc2ccc(C(F)(F)F)nc2Cl)cc(F)c1NS(C)(=O)=O, COCCN to produce C#Cc1cc(CNC(=O)C=Cc2ccc(C(F)(F)F)nc2NCCOC)cc(F)c1NS(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.