Using O=c1c(=O)c2ccc(O)cc2c1=O, NNC(=O)Nc1ccccc1 to produce O=C(NN=c1c(=O)c2ccc(O)cc2c1=O)Nc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.