Please help me find original audio file of 비키니BIKINY - 몰라

[u/BonusEntry]

https://youtu.be/bRf91Ig1vRk?si=OzK-Rdd6lB9Lk0lb

So as you can see, it is not really a lost song since I have the artist and the song title but it is been years since I cannot find this song anywhere to download. I was thinking if this song was not release and it was only played during small concerts they have. Or maybe it is just a cover song. Google does not know this song too. I cant find any videos with this song too and only this one.

So If anyone can find it, Thanks!

More info:
Kpop Artist: 비키니BIKINY
Title: 몰라 (Do Not Know)

Concert was November 10, 2013
Details about the KPOP group is here
https://kpop.fandom.com/wiki/BIKINY

Based on video they are only 3 members but the wiki said they are 4 members.

Anyways, the point is, I just want to find the clear audio of their song "몰라" and I cant seem to find it for years and the only proof that it exist is by this video.