The molecule is an peptide anion obtained by deprotonation of the carboxylic acid groups and protonation of the amino group of 11(S),15(S)-dihydroxy-14(R)-(S-glutathionyl)-5(Z),8(Z),12(E)-icosatrienoic acid; major species at pH 7.3. It is a peptide anion and a tricarboxylic acid dianion. It is a conjugate base of an 11(S),15(S)-dihydroxy-14(R)-(S-glutathionyl)-5(Z),8(Z),12(E)-icosatrienoic acid.
(5Z,8Z,11S,12E,14R,15S)-14-[(2R)-2-[[(4S)-4-azaniumyl-4-carboxylatobutanoyl]amino]-3-(carboxylatomethylamino)-3-oxopropyl]sulfanyl-11,15-dihydroxyicosa-5,8,12-trienoate