Using Nc1ccc2c(c1N)C(=O)c1ccccc1C2=O, O=C(O)C(=O)O to produce O=C1c2ccccc2C(=O)c2c1ccc1[nH]c(=O)c(=O)[nH]c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.