So I have this track I'm dying to remix for a trance song. I can't find an instrumental or acapella anywhere! I inverted the R side in logics Gain AU and effectively removed most of the vocals but its not a clean enough copy to use for subtractive synthesis against the original. Any other techniques?

PLEASE help me I'm really excited about the potential this track has, if anyone is talented at this I could email you 10 bucks for a decent vocal extraction

https://www.youtube.com/watch?v=haWZnwFqDkQ

^^ The track in question