Br.Cc1c(F)c(N)c2c(=O)cc(-c3ccc(NC(=O)[C@@H](N)CCCCN)c(F)c3)oc2c1F
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?