Using CO[Si](CCCCl)(OC)OC, CO[Si](CCCN1C(=O)NC(=O)C1(C)C)(OC)OC to produce CO[Si](CCCN1C(=O)N(CCC[Si](OC)(OC)OC)C(C)(C)C1=O)(OC)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.