Using CC(C)(C)[Si](C)(C)Cl, CCOC(=O)C1(F)C2C(=O)CC(O)C21 to produce CCOC(=O)C1(F)C2C(=O)CC(O[Si](C)(C)C(C)(C)C)C21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.