Using C[Si](C)(C)OC[C@H]1OC(=O)[C@H](O[Si](C)(C)C)[C@@H](O[Si](C)(C)C)[C@@H]1O[Si](C)(C)C, Clc1ccc(Br)cc1Cc1ccc(OCCOC2CCCC2)cc1 to produce OC[C@H]1O[C@@H](c2ccc(Cl)c(Cc3ccc(OCCOC4CCCC4)cc3)c2)[C@H](O)[C@@H](O)[C@@H]1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.