label: [OBSOLETE] 5-((1,2-dihydro-2-oxo-3H-indol-3-ylidene)methyl)-2,4-dimethyl-1H-pyrrole-3-propanoic acid
label_lc: [obsolete] 5-((1,2-dihydro-2-oxo-3h-indol-3-ylidene)methyl)-2,4-dimethyl-1h-pyrrole-3-propanoic acid