Using CC(C)Br, CNS(=O)(=O)c1ccc(OCC(F)(F)F)c(Nc2ncnc3cc(O)c(OC)cc23)c1 to produce CNS(=O)(=O)c1ccc(OCC(F)(F)F)c(Nc2ncnc3cc(OC(C)C)c(OC)cc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.