dipyrrolylmethanemethyl-L-cysteine residue(4-)
dipyrrolylmethanemethyl-l-cysteine residue(4-)
A tetracarboxylic acid anion that results from the removal of a proton from all four carboxylic acid groups of dipyrrolylmethanemethyl-<small>L</small>-cysteine residue. Major species at pH 7.3.