4-tert-Butyl 2-methyl 3-(2-methoxy-2-oxoethyl)-5-methyl-1H-pyrrole-2,4 -dicarboxylate

1H-Pyrrole-2,4-dicarboxylicacid,3-(2-methoxy-2-oxoethyl)-5-methyl-,4-(1,1-dimethylethyl)2-methylester(9CI)