Using C=C(c1cc2c(cc1NC1CN(C(=O)OC(C)(C)C)C1)N1C(=NNC(=O)C1C)CO2)C(F)(F)F to produce CC1C(=O)NN=C2COc3cc(C(C)C(F)(F)F)c(NC4CN(C(=O)OC(C)(C)C)C4)cc3N21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.