Using CC(=O)OC(C)C(=O)Nc1cc2c(cc1F)CC(=O)N2, CO to produce CC(C)(O)C(=O)Nc1cc2c(cc1F)CC(=O)N2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.