tris(8-carboxy-2,2,6,6-tetrakis(2-hydroxymethyl)benzo(1,2-d-4,5-d')bis(1,3)dithio-4-yl)methyl radical
tris(8-carboxy-2,2,6,6-tetrakis(2-hydroxymethyl)benzo(1,2-d-4,5-d')bis(1,3)dithio-4-yl)methyl radical