Using COc1cc(-c2cc(COC3CCN(C(=O)OCc4ccccc4)CC3)ccn2)cc(OC)c1OC to produce COc1cc(-c2cc(COC3CCNCC3)ccn2)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.