COc1ccc(C2C3=C(CC(C)(C)CC3=O)N(CC(=O)O)C3=C2C(=O)CC(C)(C)C3)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?