"tert-butyl 4-chloro-7H-pyrrolo[2,3-d]pyrimidine-7-carboxylate"
"tert-butyl 4-chloro-7H-pyrrolo[2,3-d]pyrimidine-7-carboxylate"
"tert-butyl 4-chloro-7H-pyrrolo[2,3-d]pyrimidine-7-carboxylate"
"tert-butyl 4-chloro-7H-pyrrolo[2,3-d]pyrimidine-7-carboxylate"