The molecule is a beta-bitter acid(1-) that is the conjugate base of colupulone, obtained by deprotonation of one of the enolic hydroxy groups. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate base of a colupulone.
5-hydroxy-4,4,6-tris(3-methylbut-2-enyl)-2-(2-methylpropanoyl)-3-oxocyclohexa-1,5-dien-1-olate