CC(=O)OC1CCC2(C)C(=CCC3C2CCC2(C)C3C[C@@H]3O[C@]32C(C)=O)C1
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?