叔丁基4-(7-(2-(环丙基甲氧基)-6-((4-甲氧基苄基)氧基)苯基)-2-氧代-2,4-二氢-1H-吡啶并[2,3-d][11,3]噁嗪-5-基)哌啶-1-羧酸叔丁酯