Using COC1CN(c2ncc(N3CCN(c4cccc(CN5C(=O)c6ccccc6C5=O)c4F)CC3)cn2)C1 to produce COC1CN(c2ncc(N3CCN(c4cccc(CN)c4F)CC3)cn2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.