Using CS(=O)(=O)Cl, C[Si](C)(C)CCOCn1ccc2nc(NC(=O)NC3CCNCC3)cnc21 to produce C[Si](C)(C)CCOCn1ccc2nc(NC(=O)NC3CCN(S(C)(=O)=O)CC3)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.