Using Brc1cnc2c(c1)NCC21CCOCC1, Cc1nc2c(Cl)cccc2c(Cl)c1C to produce Cc1nc2c(Cl)cccc2c(N2CC3(CCOCC3)c3ncc(Br)cc32)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.