Using NCCN1CCC(c2cn(-c3ccc(F)cc3)c3cc(Cl)ccc23)CC1, COC(CBr)OC to produce COC(C)(NCCN1CCC(c2cn(-c3ccc(F)cc3)c3cc(Cl)ccc23)CC1)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.