Uh oh.  Where did you come across this?  I dragged it to my desktop...and it is an PNG file.  The format produced by AI generators.  I threw it into Stable Diffusion's PNG Info tab, and it spit this out.  Gonna download that model and see how I close I can get with this settings.
parameters
Japanese grandmother with huge boobs and nipples
Steps: 25, Sampler: DPM++ 2M Karras, CFG scale: 7.0, Seed: 2013466790, Size: 512x512, Model hash: 6ce0161689, Model: v1-5-pruned-emaonly, Seed resize from: -1x-1, Denoising strength: 0