4-formamido-1-methylpyrrole-2-carboxylic acid

4-[[4-[(4-formamido-1-methylpyrrole-2-carbonyl)amino]-1-methylpyrrole-2-carbonyl]amino]-1-methylpyrrole-2-carboxylic acid

4,4-dimethyl-2-(1-methylpyrrol-2-yl)-5H-1,3-oxazole

furan-2-yl-(1-methylpyrrol-2-yl)methanone

2-hydroxy-1-(1-methylpyrrol-2-yl)-2-phenylethanone