Using CC(=O)c1ccc(O[Si](C)(C)C(C)(C)C)cc1, [Li]CCCC to produce C=C(C)c1ccc(O[Si](C)(C)C(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.