Using OC(Cc1ccccc1)(c1ccccc1)C1(OCCCCCl)C=CC=CC1 to produce ClCCCCOC1(C(=Cc2ccccc2)c2ccccc2)C=CC=CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.