The molecule is an organic anion resulting from the deprotonation of the enol moiety of nocamycin I. The major species at pH 7.3. It has a role as a bacterial metabolite. It is a conjugate base of a nocamycin I.
(1E,2E,4E,6R)-1-(2,4-dioxopyrrolidin-3-ylidene)-6-[(1S,2S,3R,5S,8S,9R,10R)-2-methoxycarbonyl-3,5,9-trimethyl-7-oxo-4,11,12-trioxatricyclo[6.3.1.01,5]dodecan-10-yl]-4-methylhepta-2,4-dien-1-olate