Using CCCCCC1OCc2cc(C(=O)O)ccc2O1, CCCc1ccc(O)cc1 to produce CCCCCC1OCc2cc(C(=O)Oc3ccc(CCC)cc3)ccc2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.