Using C[Si](C)(C)CCOCCl, COc1ccc2c(c1)c(-c1cc3nc(Br)cnc3[nH]1)cn2C to produce COc1ccc2c(c1)c(-c1cc3nc(Br)cnc3n1COCC[Si](C)(C)C)cn2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.