Using O=C(Cl)CCCCCl, CC(C)(C)OC(=O)N[C@@H](CN)CO[Si](C)(C)C(C)(C)C to produce CC(C)(C)OC(=O)N[C@@H](CNC(=O)CCCCCl)CO[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.