C=C1C(=O)O[C@H]2C(=O)[C@H](C)CCC[C@@](C)(O)/C=C\C[C@@]3(C)O[C@@H]3C[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?