Using COc1ccc(Br)cc1C(C)(C)O, C=C(O[Si](C)(C)C)C(=O)OCC to produce CCOC(=O)C(=O)CC(C)(C)c1cc(Br)ccc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.