Using O=C1CC[C@](CC2OCCO2)(c2ccc(Cl)c(Cl)c2)CN1, Cc1cccc(Br)n1 to produce Cc1cccc(N2C[C@@](CC3OCCO3)(c3ccc(Cl)c(Cl)c3)CCC2=O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.