Using C[Si](C)(C)CCOCCl, CN(Cc1nc2ncc(Br)cc2[nH]1)C(=O)OCc1ccccc1 to produce CN(Cc1nc2cc(Br)cnc2n1COCC[Si](C)(C)C)C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.