Using C[Si](C)(C)CCOC(=O)COc1ccc(N)c(OCc2ccccc2)c1, COC(=O)CBr to produce COC(=O)CNc1ccc(OCC(=O)OCC[Si](C)(C)C)cc1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.