3-[5-[(Z)-(4-ethenyl-3-methyl-5-oxopyrrol-2-ylidene)methyl]-2-[[5-[(Z)-(3-ethenyl-4-methyl-5-oxopyrrol-2-ylidene)methyl]-4-methyl-3-(3-oxido-3-oxopropyl)-1H-pyrrol-2-yl]methyl]-4-methyl-1H-pyrrol-3-yl]propanoate 3-[4-methyl-2-[[4-methyl-5-[(Z)-(4-methyl-5-oxo-3-vinyl-pyrrol-2-ylidene)methyl]-3-(3-oxido-3-oxo-propyl)-1H-pyrrol-2-yl]methyl]-5-[(Z)-(3-methyl-5-oxo-4-vinyl-pyrrol-2-ylidene)methyl]-1H-pyrrol-3-yl]propanoate 3-[4-methyl-2-[[4-methyl-5-[(Z)-(4-methyl-5-oxo-3-vinyl-2-pyrrolylidene)methyl]-3-(3-oxido-3-oxopropyl)-1H-pyrrol-2-yl]methyl]-5-[(Z)-(3-methyl-5-oxo-4-vinyl-2-pyrrolylidene)methyl]-1H-pyrrol-3-yl]propanoate 3-[5-[(Z)-(5-keto-3-methyl-4-vinyl-3-pyrrolin-2-ylidene)methyl]-2-[[5-[(Z)-(5-keto-4-methyl-3-vinyl-3-pyrrolin-2-ylidene)methyl]-3-(3-keto-3-oxido-propyl)-4-methyl-1H-pyrrol-2-yl]methyl]-4-methyl-1H-pyrrol-3-yl]propionate 3-[5-[(Z)-(4-ethenyl-3-methyl-5-oxo-pyrrol-2-ylidene)methyl]-2-[[5-[(Z)-(3-ethenyl-4-methyl-5-oxo-pyrrol-2-ylidene)methyl]-4-methyl-3-(3-oxido-3-oxo-propyl)-1H-pyrrol-2-yl]methyl]-4-methyl-1H-pyrrol-3-yl]propanoate ZINC03978686