Format date string with .000Z into NSDate

I would like to format a date string into a NSDate object, which doesn't sound like a big thing.

The point is, that the date string contains a dot in the timezone value instead of a plus or something else. A date looks like this:

2017-06-04T16:00:00.000Z

I tried format strings like

yyyy-MM-dd'T'HH:mm:ss.ZZZZ
yyyy-MM-dd'T'HH:mm:ss.ZZZ
yyyy-MM-dd'T'HH:mm:ss.Z

Of course I've also checked it on nsdateformatter.com, which works but in xCode the NSDate is always nil.