おうぶくろむささびじゃないです
大袋鼯鼠じゃないです
ōbuku romusasabijanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of おおふくろももんが

1. It's not a giant flying squirrel.

Negative
Polite
Casual Register
Usually Written in Kana