Using paths in service definitions for an external volume

If I have a docker volume defined in my compose file such as

volumes:
   nas_mount:  
   driver: local 
   name: nas_mount
      driver_opts:
      type: cifs    
      device: //192.168.0.10/data

Is there a way to use it in a service, but only a subpath of the volume root if that makes sense. e.g.

service:
   image: some.image/image  
   container_name: sabnzbd  
   volumes:  
      - nas_mount/somesubfolder:/data #optional  
      - nas_mount/anotherfolder/somesubfolder2:/data2 #optional