せいがんガン物質 ぶっしつじゃありませんでした
seigambusshitsujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 制ガン物質

1. Was not a cancer-preventative substance.; Was not an anti-cancer substance.

Past/Perfective
Negative
Polite
Terminal Form
Medicine