The molecule is an organic anion obtained by selective deprotonation of the 4-hydroxy group on the chromene ring of desmethyldescarbamoylnovobiocin. It is a conjugate base of a desmethyldescarbamoylnovobiocin.
3-[[4-hydroxy-3-(3-methylbut-2-enyl)benzoyl]amino]-8-methyl-2-oxo-7-[(2R,3R,4R,5R)-3,4,5-trihydroxy-6,6-dimethyloxan-2-yl]oxychromen-4-olate