Using COC(=O)c1ccc(-c2cccn2C(=O)OC(C)(C)C)cc1F to produce COC(=O)c1ccc(C2CCCN2C(=O)OC(C)(C)C)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.