Yes, this is a little tricky and will probably not work in 1 go.
I think the easiest way would be
Use
%artist% - %title%) (%year%)
to import the data - you will lose the ) behind the "Remix".
So the second step would be:
Convert>Tag-Tag for TITLE
Format string: %title%)
Or you use an action of the type "Guess value"
Source String: $regexp(%_filename%,(.*) - (.*) \((.*)\),$1==$2==$3)
Target pattern: %artist%==%title%==%year%