1H-Pyrrolo[3',2':5,6]pyrido[4,3-d]pyrimidine-8-carboxaldehyde, 3-(2,6-difluoro-3,5-dimethoxyphenyl)-1-ethyl-2,3,4,7-tetrahydro-2-oxo-7-(phenylsulfonyl)-
1H-Pyrrolo[3',2':5,6]pyrido[4,3-d]pyrimidine-8-carboxaldehyde, 3-(2,6-difluoro-3,5-dimethoxyphenyl)-1-ethyl-2,3,4,7-tetrahydro-2-oxo-7-(phenylsulfonyl)-