Using CCc1nn(-c2ccccc2)c2nc(N3CCN(C4CN(C(c5ccccc5)c5ccccc5)C4)CC3)ncc12 to produce CCc1nn(-c2ccccc2)c2nc(N3CCN(C4CNC4)CC3)ncc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.