859-38-1
benzyl-5-(acetoxymethyl)-4-[2-(methoxycarbonyl)ethyl]-3-methylpyrrole-2--carboxylate
→
~93%
992-36-9
dibenzyl 3,3'-bis-(2-methoxycarbonylethyl)-4,4'-dimethyl-2,2'-methylenedipyrrole-5,5'-dicarboxylate