Hi,

I had a look at "Prof. Andreas Raue" original article for this dataset.

"The raw Ovarian Cancer ascites RNA-seq read data has not been submitted to a public repository due to privacy concerns, but can be made available upon reasonable request to the corresponding author pending appropriate approval from study participants. The authors declare that all the other data supporting the findings of this study are available within the article and its supplementary information files and from the corresponding author upon reasonable request."

If the authors of the article you mentioned can get access to these datasets, you will also get access by contacting "Prof. Andreas Raue". If he doesn't respond, you better contact Nature communications saying authors don't respond to the data requests. But wait at least wait for 3-4 weeks after the email to the authors.