Using N#CCC(C1CC1)n1cc(-c2nc(-c3cnc4n3CCNC4)cc3nccn23)cn1, CC(=O)O[BH-](OC(C)=O)OC(C)=O to produce CN1CCn2c(-c3cc4nccn4c(-c4cnn(C(CC#N)C5CC5)c4)n3)cnc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.