The molecule is a methanopterin derivative in which the methanopterin is modified by amide formation with L-glutamic acid. It is a conjugate acid of a sarcinapterin(4-).
(2S)-2-[[(2S)-2-[[(2R,3S,4R,5S)-5-[(2R,3S,4S)-5-[4-[[(1R)-1-(2-amino-7-methyl-4-oxo-3H-pteridin-6-yl)ethyl]amino]phenyl]-2,3,4-trihydroxypentoxy]-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-4-carboxybutanoyl]amino]pentanedioic acid