I would like to know the name of this song. https://soundcloud.com/user-738039642/audio-3
Shazam tells me it's Killa from Cherish featuring Yung Joc. Indeed, at the gap in the middle of your your sample, the song is very similar to the part of the video at 50". If those are not the same song, at least yours borrow a huge sample of Killa, which may be a lead to the answer. It may also be a remix, or an alternate version.