Find and get last link animation attachement mov in python

Question

i’m trying to ‘save to’ a specific link in shotgun (the last animation mov founded linked in shotgun of chosen shots)

the final adress i’d like to save is: 15.22.180.80/file_serve/attachement/9430064/ALCM_552-001_025_Anim_001_003.mov

first i don’t know how to find the last animation link (the second link in page 2)

also, as you can see the adress of the mov is a bit strange for me as i doesn’t know how i can guess this part: 9430064 (last link in page 3)

i’d tryed many way to do that without any succes at all, i understand python but not shotgun, so any help or idea is welcome