On August 02, I had somehow saved a copy of this image. Was this a re-post?
As there's no budget for a professional separation and just playing around, Ultraseps V3 (Process #3) appeared to do a reasonable job (8 colors) with - Underbase, Yellow, Royal Blue, Light Blue, Red, Magenta, Highlight, Black.
I know it's not the quality of Dan (and others), but I attached a snapshot of the results.
This used the saved .JPG (72 Pixel/in, 1,327 KB) file of the posted image so might have been better with the original art file.
I increased the Red (Curves) a touch, but not much.
Update: This original post (output and Channels) used a Screen Capture where the image did not accurately represent the Ultraseps results and was almost blurry. Below is a .JPG file from PS that is more accurate as to the results.