(2E)-3-{5-[(2,4-diamino-6-ethylpyrimidin-5-yl)methyl]-2,3-dimethoxyphenyl}-1-[(1S)-1-(2-methylprop-1-en-1-yl)phthalazin-2(1H)-yl]prop-2-en-1-one

P0A017 — Dihydrofolate reductase