Using CC(C)(O)c1ccc(C(C)(C)O)cc1, CCC(C)(C)OO to produce CCC(C)(C)OOC(C)(C)c1cccc(C(C)(C)OOC(C)(C)CC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.