Using CCOC(=O)[C@@H](OC(C)(C)C)c1c(C=O)cc2ccccc2c1-c1ccc(Cl)cc1, [Li]CCCC to produce C=Cc1cc2ccccc2c(-c2ccc(Cl)cc2)c1[C@H](OC(C)(C)C)C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.