(D) Petitioner’s brief The petitioner shall serve and file a brief in connection with a petition for judicial review not later than 40 days after the date on which the administrative record is available, and may serve and file a reply brief not later than 14 days after service of the brief of the respondent, and the court may not extend these deadlines, except for good cause shown. If a petitioner fails to file a brief within the time provided in this paragraph, the court shall dismiss the appeal unless a manifest injustice would result. (E) Scope and standard for review The court of appeals shall conduct a de novo review of the administrative record on which the final determination was based and any additional evidence that the Court finds was previously unavailable at the time of the administrative hearing. (F) Exhaustion of administrative remedies A court may review a final determination under paragraph (3)(C) only if— (i) the petitioner has exhausted all administrative remedies available to the petitioner as of right, including any administrative remedies established by regulation