Using Nc1ccc(-c2ccn3c(n2)nc2ccccc23)cc1F, CC(=O)O[BH-](OC(C)=O)OC(C)=O to produce CNc1ccc(-c2ccn3c(n2)nc2ccccc23)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.