bamnidazole

The story

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

From (car)bam(ate) + -nidazole (“metronidazole derivative”).