硫酸 りゅうさんマグネシウムじゃないです
ryūsammaguneshiumujanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 硫酸マグネシウム

1. It's not magnesium sulfate.; It isn't magnesium sulfate.

Negative
Polite
Casual Register
Chemistry