The molecule is an organic anion obtained by deprotonation of the amide group of oxidized Renilla luciferin. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate base of an oxidized Renilla luciferin.
4-[6-benzyl-5-[(2-phenylacetyl)amino]pyrazin-2-yl]phenolate