Using CCOC(=O)C1CC(C)(C)CC1=O, CCCCCC(C)C(C)c1cc(O)cc(O)c1 to produce CCCCCC(C)C(C)c1cc(O)c2c3c(c(=O)oc2c1)CC(C)(C)C3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.