Using [N-]=[N+]=[N-], O=C(CCl)N1CC(c2ccccc2)c2ccccc21 to produce [N-]=[N+]=NCC(=O)N1CC(c2ccccc2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.