(S)-4-(2-((S)-2-carboxy-5,6-dihydroxyindolin-1-yl)vinyl)-2,3-dihydropyridine-2,6-dicarboxylic acid
"2,6-Pyridinedicarboxylic acid,4-(2-(2-carboxy-2,3-dihydro-5,6-dihydroxy-1H-indol-1-yl)ethenyl)-2,3-dihydro-, (S-(R*,R))-"
"2,6-Pyridinedicarboxylic acid,4-(2-(2-carboxy-2,3-dihydro-5,6-dihydroxy-1H-indol-1-yl)ethenyl)-2,3-dihydro-, (S-(R*,R))-"