The pipe you are after is part of an assembly which has both of the compressor pipes, they cannot be separated.
On the pipe you arrowed there will be an inline connector before it passes from engine compartment into cabin. It is a threaded fitting on early cars...just undo with two spanners. On later cars it is a 'quick release' fitting.....without the special tool you have to dismantle the joint to get it apart....pull back the green rubber bit and there is a circlip, remove that and the joint pulls apart. You only need the pipe which is the male part of the fitting but you might as well keep all the washers, spacers, O rings etc that come out.
The pipe runs down under the compressor, remove a bolt to free the pipe(s) from a fastening to the sump.
Use a socket (15mm ?) and long extensions from around power steering pump area to undo the pipe-compressor joint bolt.
Unbolt the compressor...3 bolts at front, 3 at back. Rotate compressor anti clockwise as it is pulled forward, it should wriggle out.
Follow the second compressor pipe to either a smaller version of the quick release fitting dismanted earlier or a metal block connector under the battery tray, undo the central bolt to separate this connector and wriggle the whole pipe assy out.
You need to be sure that the pipe you are getting is the same as the one in your car, there are a few different types and they cannot be interchanged.
Dont be tempted to hacksaw through the pipes upstream of the quick connectors etc, any swarf that got into the pipe would wreck your compressor if not found.