Using CCOC(=O)CCCCC(OC(C)=O)c1cccs1, Cc1cc(O)c(C)c(C)c1O to produce CCOC(=O)CCCCC(C1=C(C)C(=O)C(C)=C(C)C1=O)c1cccs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.