Using CC[C@@H]1CCc2ncnc(N3CC4(CCN(Cc5ccccc5)CC4)c4c(CNC(C)C)cccc43)c21 to produce CC[C@@H]1CCc2ncnc(N3CC4(CCNCC4)c4c(CNC(C)C)cccc43)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.