Using COC(=O)c1ccc(-n2cnc3c(NC4CC4)nc(C(F)(F)F)nc32)cc1 to produce O=C(O)c1ccc(-n2cnc3c(NC4CC4)nc(C(F)(F)F)nc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.