Using CC(C)(C=O)NC(=O)OC(C)(C)C, Nc1c(F)cccc1F to produce CC(C)(CNc1c(F)cccc1F)NC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.