Using C=CCCC(=O)O, CCCCCCCCCCCC(CC=O)OC1CCCCO1 to produce C=CCC(C(=O)O)C(O)CC(CCCCCCCCCCC)OC1CCCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.