Using O=C1NC(=O)c2ccccc21, O=C1OCc2ccccc2-c2ccccc21 to produce O=C(O)c1ccccc1-c1ccccc1CN1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.