硫酸 りゅうさんマグネシウムでしょう
ryūsammaguneshiumudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 硫酸マグネシウム

1. Magnesium sulfate, probably.; It's likely magnesium sulfate.

Polite
Presumptive
Conjecture
Chemistry