Using CC(=O)O[BH-](OC(C)=O)OC(C)=O, c1ccc(N2CCC(c3nnc4n3-c3ccccc3CNC4)CC2)nc1 to produce CN1Cc2ccccc2-n2c(nnc2C2CCN(c3ccccn3)CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.