Using CCCCCCI, COC(=O)C(C(=O)OC)c1ccc(Oc2ccccc2)cc1 to produce CCCCCCC(C(=O)OC)(C(=O)OC)c1ccc(Oc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.