分子式：
(2R)-2-(环戊氨基)-丁酸甲酯
4-{[(7R)-8-Cyclopentyl-7-ethyl-5-methyl-6-oxo-5,6,7,8-tetrahydro- 2-pteridinyl]amino}-3-methoxybenzoic acid 4-[[(7R)-8-环戊基-7-乙基-5,6,7,8-四氢-5-甲基-6-氧代-2-喋啶基]氨基]-3-甲氧基-N-(1-甲基-4-哌啶基)苯甲酰胺