CC1CC2C(C(O)C[C@]3(C)C2CC[C@]3(O)C(=O)CO)[C@]2(C)C=CC(=O)C=C12
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?