CC1(C)CCC[C@@]2(C)[C@@H]3C=C4OC(=O)C(CO)=C4[C@H]4O[C@@]34CC[C@H]12
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?