ornidazole

The story

1. Proto-Indo-European*ǵʰelh₃-
2. Proto-Indo-European*ǵʰl̥h₃rós
3. Proto-Hellenic*kʰlōrós
4. Ancient Greekχλωρός (khlōrós)
5. Englishchloro-
6. Englishchlor-
7. Proto-Indo-European*médʰu
8. Proto-Hellenic*métʰu
9. Ancient Greekμέθυ (méthu)
10. Proto-Indo-European*swel-der.?
11. Ancient Greekῡ̔́λη (hū́lē)
12. GermanMethy
13. Englishme(thyl)
14. Egyptiannṯr
15. Egyptiannṯrj
16. Ancient Greekνῐ́τρον (nĭ́tron)
17. Englishnitro-
18. Egyptianjmn
19. Ancient GreekᾸ̓́μμων (Ắmmōn)
20. LatinAmmōn
21. Latinammoniacus
22. Englishammonia
23. Proto-Indo-European*dʰeh₁-
24. Englishamide
25. Englishimide
26. Proto-Indo-European*né
27. Proto-Indo-European*n̥-
28. Proto-Hellenic*ə-
29. Ancient Greekᾰ̓- (ă-)
30. Proto-Indo-European*gʷeyh₃-
31. Proto-Indo-European*gʷih₃wós
32. Proto-Indo-European*gʷíh₃weti
33. Proto-Hellenic*gʷyṓw-ō
34. Proto-Hellenic*d͏̌ṓwō
35. Ancient Greekζώω (zṓō)
36. Ancient Greekζῶ (zô)
37. Ancient Greekζωή (zōḗ)
38. Frenchazote
39. Englishazote
40. Englishazo-
41. Englishazole
42. Englishimidazole
43. Englishmetronidazole
44. English todayornidazole

From (chl)or- + -nidazole (“metronidazole derivative”).