COc1ccccc1C1C(C#N)=C(N)Oc2cc(C)n(CCCn3ccnc3)c(=O)c21
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?