Using CCOC(=O)[C@@H](OC(C)(C)C)c1c(C)cc2ccccc2c1C1=CCCCC1 to produce Cc1cc2ccccc2c(C2=CCCCC2)c1[C@H](OC(C)(C)C)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.