Using COc1cc2nc(N(C)CC3(c4ccccc4)CCN(Cc4ccccc4)CC3)nc(N)c2cc1OC to produce COc1cc2nc(N(C)CC3(c4ccccc4)CCNCC3)nc(N)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.