105518-45-4
3,6,7,8-tetrahydrobenzo[1,2-b:4,3-b']dipyrrole-2-carboxylic acid,ethyl ester
→
107474-67-9
3-((tert-butoxy)carbonyl)-1,2-dihydro-3H-pyrrolo[3,2-e]indole-7-carboxylic acid