Using Cn1cnc(CO)n1, CCn1ncnc1COc1nn2c(-c3c(F)ccc(F)c3F)nnc2cc1C(C)(C)C to produce Cn1cnc(COc2nn3c(-c4c(F)ccc(F)c4F)nnc3cc2C(C)(C)C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.