3-{5-[(2,4-diaminopyrimidin-5-yl)methyl]-2,3-dimethoxyphenyl}-1-[(1S)-6,7-dimethoxy-1-(4-methoxyphenyl)-3,4-dihydrophthalazin-2(1H)-yl]propan-1-one

P0A017 — Dihydrofolate reductase