Using CC(=O)O[BH-](OC(C)=O)OC(C)=O, Cn1c2c(c3ccc(Br)cc31)CCNC2 to produce CN1CCc2c(n(C)c3cc(Br)ccc23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.