Using FCCCCCBr, CCNC(=O)c1ccc(-n2nnc(C(=O)NC3CC3)c2C)c(O)c1 to produce CCNC(=O)c1ccc(-n2nnc(C(=O)NC3CC3)c2C)c(OCCCCCF)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.