Using CC(C)(C)OC(=O)N[C@@H](C(=O)O)c1ccc(O)cc1, CC(C)(C)[Si](C)(C)OCCN(CCO[Si](C)(C)C(C)(C)C)C(=O)CCl to produce CC(C)(C)OC(=O)N[C@@H](C(=O)O)c1ccc(OCC(=O)N(CCO[Si](C)(C)C(C)(C)C)CCO[Si](C)(C)C(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.