4-(4-((8-乙基-7-氧代-7，8-二氢吡啶并[2，3-d]嘧啶-2-基)氨基)-2-氟苯基)哌嗪-1-甲酸叔丁酯

4-(4-((8-乙基-7-氧代-7，8-二氢吡啶并[2，3-d]嘧啶-2-基)氨基)-2-氟苯基)哌嗪-1-甲酸叔丁酯

tert-butyl4-(4-((8-ethyl-7-oxo-7，8-dihydropyrido[2，3-d]pyrimidin-2-yl)amino)-2-fluorophenyl)piperazine-1-carboxylate