1 3RR 4-(2,4-dichloro-5-methoxyphenyl)-2,6-dimethyl-7h-pyrrolo[2,3-D]pyrimidine-5-carbonitrile 1.000 2 3RQ 4-(2,4-dichloro-5-methoxyphenyl)-2-methyl-7h-pyrrolo[2,3-D]pyrimidine-5-carbonitrile 0.957