Using COC(=O)C(C)(C)CO, O=C1NC(=O)c2c(O)cccc21 to produce COC(=O)C(C)(C)CON1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.