Using C[Si](C)(C)CCOCCl, O=C1Nc2cc(Br)ccc2/C1=C/c1cccc(Cl)c1 to produce C[Si](C)(C)CCOCN1C(=O)/C(=C\c2cccc(Cl)c2)c2ccc(Br)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.