Using Cc1nc2cccc3n(CCCCCN4C(=O)c5ccccc5C4=O)c(=O)c1n23 to produce Cc1nc2cccc3n(CCCCCN)c(=O)c1n23, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.