Using c1ccc2c(c1)CNCCC2c1ccc2[nH]ccc2c1, CC(=O)O[BH-](OC(C)=O)OC(C)=O to produce CN1CCC(c2ccc3[nH]ccc3c2)c2ccccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.