The athlete used the medicine Trofodermin to treat sore lips and did not see neither the doping warning nor understood Clostebol was a prohibited substance.
The suspension has been backdated to October 18 2016 when the athlete was provisionally suspended. She can return to competition on November 18, 2017.
Norwegian and English text here:
https://www.idrettsforbundet.no/tema/lov-og-forskrifter/informasjon-om-therese-johaug-saken/