硫酸 りゅうさんアンモニウムでしょう
ryūsan'ammoniumudeshō

Noun
Desu Copula

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

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

Polite
Presumptive
Conjecture