COc1ccc(Oc2ncc3nc(-c4ccc(Cl)cc4)c(=O)n(CCC#N)c3n2)cc1
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?