CC(C)[C@H](Cc1coc2c1c(nc(n2)N)N)c3ccccc3OC D2B_187_3NXO 5-[(2S)-2-(2-methoxyphenyl)-3-methyl-butyl]furo[2,3-d]pyrimidine-2,4-diamine CC(C)[C@@H](Cc1coc2c1c(nc(n2)N)N)c3ccccc3OC D2B_187_3NXO 5-[(2R)-2-(2-methoxyphenyl)-3-methyl-butyl]furo[2,3-d]pyrimidine-2,4-diamine