Using C=CCO, CC(C(=O)O)c1ccc2c(c1)SCC1CCCCC1C2=O to produce C=CCOC(=O)C(C)c1ccc2c(c1)SCC1CCCCC1C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.