CC(C)[C@]1(Cl)CC[C@@H]2[C@]3(C)CCC[C@@](C)(C(=O)O)[C@H]3C[C@H](Cl)[C@@]2(Cl)[C@H]1Cl
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?