| http://www.w3.org/ns/prov#value | - nyl; and M+ when Z??? is oxygen, wherein M is an alkali metal; wherein the alkyl, cycloalkyl, alkenyl, and/or alkynyl groups may be optionally substituted by one more C1-20alkyl, halo, hydroxyl, acetyl, amino, lower alkylamino, lower alkynylamino, imidazolinylmethylamino, di-lower alkylamino, di-lower alkynylamino, piperidino, pyrrolidino, azetidino, aziridino,
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