The molecule is a monocarboxylic acid anion that is the major microspecies of primary fluorescent chlorophyll catabolite at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate acid of a primary fluorescent chlorophyll catabolite.
3-[(3S,4S)-2-[(4-ethenyl-3-methyl-5-oxo-1,2-dihydropyrrol-2-yl)methyl]-5-[2-[(3-ethyl-5-formyl-4-methyl-1H-pyrrol-2-yl)methyl]-5-methoxycarbonyl-3-methyl-4-oxo-1H-cyclopenta[b]pyrrol-6-yl]-3-methyl-3,4-dihydro-2H-pyrrol-4-yl]propanoate