The molecule is a doubly-charged organosulfate oxoanion arising from deprotonation of both sulfo groups of Watasenia luciferin; major species at pH 7.3. It is a conjugate base of a Watasenia luciferin.
[4-[[8-benzyl-3-hydroxy-6-(4-sulfonatooxyphenyl)imidazo[1,2-a]pyrazin-2-yl]methyl]phenyl] sulfate