Using C[Si](C)(C)CCOCCl, CC(=O)Oc1ccc(S(=O)(=O)Nc2nnc(C(C)C)s2)cc1 to produce CC(=O)Oc1ccc(S(=O)(=O)N(COCC[Si](C)(C)C)c2nnc(C(C)C)s2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.