Using COc1ccc(C2=C(C(O)c3ccc(OCCN4CCCC4)cc3)c3ccccc3CC2)cc1 to produce COc1ccc(-c2ccc3ccccc3c2Cc2ccc(OCCN3CCCC3)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.