Using CC(C)(C)[O-], COc1cc2c(c(C)c1C)C(=O)C(C1CCCC1)CC2 to produce COc1cc2c(c(C)c1C)C(=O)C(C)(C1CCCC1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.