Identify AC Power Cord with rotated pins

Solution 1:

It looks like it is C19/C20 type connector

from Wikipedia:

Earthed, 16 A, polarized. This coupler is used for some IT applications where higher currents are required, as for instance, on high-power workstations and servers, uninterruptible power supplies, power distribution units, large network routers, switches, blade enclosures, and similar equipment. It is rectangular and has pins parallel to the long axis of the coupler face.

Solution 2:

Looks like you're looking for a IEC 60320 C19 to standard mains connector, like so. Of note, these cables are used commonly for things like UPS, server/rackmount equipment, etc.