Using COc1ccc2nc(N[C@H]3CCN(Cc4ccccc4)C3)cc(C)c2c1 to produce COc1ccc2nc(N[C@H]3CCNC3)cc(C)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.