bilirubin dimethyl ester
3-{2-{3-(2-Methoxycarbonyl-ethyl)-4-methyl-5-[4-methyl-5-oxo-3-vinyl-1,5-dihydro-pyrrol-(2E)-ylidenemethyl]-1H-pyrrol-2-ylmethyl}-4-methyl-5-[3-methyl-5-oxo-4-vinyl-1,5-dihydro-pyrrol-(2E)-ylidenemethyl]-1H-pyrrol-3-yl}-propionic acid
3-{2-{3-(2-Methoxycarbonyl-ethyl)-4-methyl-5-[3-methyl-5-oxo-4-vinyl-1,5-dihydro-pyrrol-(2E)-ylidenemethyl]-1H-pyrrol-2-ylmethyl}-4-methyl-5-[4-methyl-5-oxo-3-vinyl-1,5-dihydro-pyrrol-(2E)-ylidenemethyl]-1H-pyrrol-3-yl}-propionic acid
3-{2-{3-(2-Methoxycarbonyl-ethyl)-4-methyl-5-[4-methyl-5-oxo-3-vinyl-1,5-dihydro-pyrrol-(2Z)-ylidenemethyl]-1H-pyrrol-2-ylmethyl}-4-methyl-5-[3-methyl-5-oxo-4-vinyl-1,5-dihydro-pyrrol-(2Z)-ylidenemethyl]-1H-pyrrol-3-yl}-propionic acid
3-{2-{3-(2-Methoxycarbonyl-ethyl)-4-methyl-5-[3-methyl-5-oxo-4-vinyl-1,5-dihydro-pyrrol-(2Z)-ylidenemethyl]-1H-pyrrol-2-ylmethyl}-4-methyl-5-[4-methyl-5-oxo-3-vinyl-1,5-dihydro-pyrrol-(2Z)-ylidenemethyl]-1H-pyrrol-3-yl}-propionic acid