COc1cccc(C2C(C(=O)C(C)(C)C)N3C=C(C#N)C=CC3C23C(=O)c2ccccc2C3=O)c1OC
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?