Cc1c(C)c2ccc(O[C@@H]3O[C@H](CO)[C@H](O)[C@H](O)[C@H]3O)cc2oc1=O
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?