A 37-year-old male patient was admitted to the resuscitation department because of attacks of tonoclonic spasms repeating every half an hour. Between the attacks the patient remains unconscious. AP is 120/90 mm Hg, Ps- 100 bpm. A day before the patient was at wedding and consumed alcohol. 5 years ago he had a closed craniocerebral trauma and brain contusion that later caused single convulsive attacks accompanied by loss of consciousness, but the patient didn't undergo antiepileptic treatment. What drug should be injected for emergency aid?