Using CCCc1c(O)ccc(C(=O)OC)c1O, COc1cccc(CCCCCCBr)c1OC to produce CCCc1c(OCCCCCCc2cccc(OC)c2OC)ccc(C(=O)OC)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.