2-[[4-[(2,4-二氨基蝶啶-6-基)甲基-甲基氨基]苯甲酰基]氨基]-5-[(2-甲基丙烷-2-基)氧基]-5-氧代戊酸

4-[[2-(2,4-diaminopteridin-6-yl)acetyl]amino]benzoic acid

6-(溴甲基)-2,4-蝶啶二胺