Using O=C(C=CC1CCN(Cc2ccccc2)CC1)c1cc2ccccc2o1 to produce O=C(CCC1CCN(Cc2ccccc2)CC1)c1cc2ccccc2o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.