Using C1=COCCC1, CC1=C(c2cccc(Br)c2)C(c2ccc(I)cc2)Oc2ccc(O)cc21 to produce CC1=C(c2cccc(Br)c2)C(c2ccc(I)cc2)Oc2ccc(OC3CCCCO3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.