[CMS 2016 MC](https://opendata.cern.ch/search?q=&f=type%3ADataset%2Bsubtype%3ASimulated&f=experiment%3ACMS&f=year%3A2016&l=list&order=desc&p=1&s=10&sort=mostrecent) do not have DOIs yet The [PREMIX pileup sample](https://opendata.cern.ch/record/30595) shows one but it is [invalid](https://doi.org/10.7483/OPENDATA.CMS.VWUA.G7SB)
