bibenzonium

The story

1. Proto-Indo-European*dwóh₁
2. Proto-Indo-European*dwi-
3. Proto-Italic*dwi-
4. Latinbi-
5. Englishbi-
6. Arabicلُبَان (lubān)
7. Proto-Indo-European*yew-
8. Proto-Indo-European*yéwos
9. Proto-Indo-Iranian*yáwas
10. Sanskritयव (yava)bor.?
11. Proto-Austronesian*zawa
12. Proto-Malayo-Polynesian*zawader.?
13. Old Javanesejawa
14. Old JavaneseJawi
15. Javaneseꦗꦮꦶ (jawi)
16. Arabicجَاوَة (jāwa)
17. Arabicـِيّ (-iyy)
18. Arabicجَاوِيّ (jāwiyy)
19. Arabicلُبَان جَاوِيّ (lubān jāwiyy)
20. Catalanbenjuí
21. Middle Frenchbenjoin
22. Englishbenzoin
23. Englishbenzo-
24. Englishbenz-
25. Proto-Indo-European*swel-der.?
26. Ancient Greekῡ̔́λη (hū́lē)
27. Englishbenzyl
28. New Latinammōnium
29. Englishammonium
30. Englishonium
31. English todaybibenzonium

From bi- + benz(yl) + -onium (“quaternary ammonium compound”).