Using CC(=O)O[BH-](OC(C)=O)OC(C)=O, O=c1cc(OCc2ccc(Br)cn2)ccn1CCc1ccc2c(c1)CCNCC2 to produce CN1CCc2ccc(CCn3ccc(OCc4ccc(Br)cn4)cc3=O)cc2CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.