Using CC(C)[Si](Oc1ccc(C(O)Cc2ccc(OCC3CC3)cc2Br)nc1)(C(C)C)C(C)C to produce Oc1ccc(C2Cc3ccc(OCC4CC4)cc3O2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.