Using CNc1nccc(-c2cc(NCCCN3C(=O)c4ccccc4C3=O)c3cc(OC)ccc3c2)n1 to produce CNc1nccc(-c2cc(NCCCN)c3cc(OC)ccc3c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.