cloxacepride

The story

1. Englishchlorophenoxy
2. Proto-Indo-European*h₂eḱ-
3. Proto-Indo-European*h₂eḱéh₁yeti
4. Proto-Italic*akēō
5. Latinaceō
6. Latinacēscō
7. Latinacētum
8. Englishaceto-
9. Englishacet-
10. Proto-Indo-European*swel-der.?
11. Ancient Greekῡ̔́λη (hū́lē)
12. Englishacetyl
13. Egyptianjmn
14. Ancient GreekᾸ̓́μμων (Ắmmōn)
15. LatinAmmōn
16. Latinammoniacus
17. Englishammonia
18. Proto-Indo-European*dʰeh₁-
19. Englishamide
20. Englishacetamide
21. Latinsulpur
22. Latinsulfur
23. Latinsulphur
24. Anglo-Normansulfre
25. Middle Englishsulphur
26. Englishsulf(ur)
27. Englishamide
28. Englishsulfamide
29. Englishsul(famoyl)
30. Proto-Indo-European*péh₂wr̥
31. Proto-Hellenic*pāwər
32. Ancient Greekπῦρ (pûr)
33. Ancient Greekπῠρρός (pŭrrhós)
34. GermanPyrro
35. Englishpyrrole
36. Englishpyrrolidine
37. Englishpyr(rolidinyl)
38. Arabicلُبَان (lubān)
39. Proto-Indo-European*yew-
40. Proto-Indo-European*yéwos
41. Proto-Indo-Iranian*yáwas
42. Sanskritयव (yava)bor.?
43. Proto-Austronesian*zawa
44. Proto-Malayo-Polynesian*zawader.?
45. Old Javanesejawa
46. Old JavaneseJawi
47. Javaneseꦗꦮꦶ (jawi)
48. Arabicجَاوَة (jāwa)
49. Arabicـِيّ (-iyy)
50. Arabicجَاوِيّ (jāwiyy)
51. Arabicلُبَان جَاوِيّ (lubān jāwiyy)
52. Catalanbenjuí
53. Middle Frenchbenjoin
54. Englishbenzoin
55. Englishbenzo-
56. Englishbenz-
57. Englishamide
58. English(benzam)ide
59. Englishsulpiride
60. English todaycloxacepride

From chlo(rophen)ox(y) + ace(tamide) + -pride (“sulpiride derivative”).