CCCCOc1ccc(C2C3CN(C(=O)OCC)CC=C3C(C#N)=C(N)C2(C#N)C#N)cc1OC
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?