飽和 ほうわ化合 かごう ものでしょう
fuhōwa kagōmonodeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 不飽和化合物

1. Unsaturated compound, probably.; It will likely be an unsaturated compound.

Polite
Presumptive
Conjecture