Write SQL query to solve given problem: Among the papers published in the journal "Molecular Brain", how many of them were published in the year 2011?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T2.Id) FROM Journal AS T1 INNER JOIN Paper AS T2 ON T1.Id = T2.JournalId WHERE T2.Year = 2011 AND T1.FullName = 'Molecular Brain'