Using [BH3-]C#N, COCCN1CCN(c2c(C(C)=O)cc(Cl)c3cccnc23)CC1 to produce COCCN1CCN(c2c(C(C)N)cc(Cl)c3cccnc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.