Using [N-]=[N+]=[N-], O=C(Cl)c1ccc2c(c1)C(=O)OC2=O to produce [N-]=[N+]=NC(=O)c1ccc2c(c1)C(=O)OC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.