Using CN(CCO[Si](c1ccccc1)(c1ccccc1)C(C)(C)C)C(=O)OCc1ccccc1 to produce CNCCO[Si](c1ccccc1)(c1ccccc1)C(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.