Using C[Si](C)(C)CCOCCl, COC(=O)C1CN(C(=O)OC(C)(C)C)CCO1 to produce COC(=O)C1(COCC[Si](C)(C)C)CN(C(=O)OC(C)(C)C)CCO1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.