Using Nc1nc(C(=NOCC(=O)OC(c2ccccc2)c2ccccc2)C(=O)O)cs1 to produce O=C(CON=C(C(=O)O)c1cscn1)OC(c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.