硝酸 しょうさんアンモニウムでしょう
shōsan'ammoniumudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 硝酸アンモニウム

1. Ammonium nitrate, probably.; It will likely be ammonium nitrate.

Polite
Presumptive
Conjecture