CCC(C)(C)C(=O)O[C@@H]1C[C@H](C)C=C2C=C[C@H](C)[C@@H](CC[C@H]3C[C@@H](O)CC(=O)O3)[C@H]21
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?