Using CCOC(=O)c1cnc2c(c1)C[C@@]1(C2)C(=O)Nc2ncc(Br)cc21, C[Si](C)(C)CCOCCl to produce CCOC(=O)c1cnc2c(c1)C[C@@]1(C2)C(=O)N(COCC[Si](C)(C)C)c2ncc(Br)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.