Using COCOc1ccc(OCOC)c(C2=C(C(=O)OC)C[C@@H](C)C2)c1 to produce COCOc1ccc(OCOC)c(C2CC(C)CC2C(=O)OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.