C/C=C(\C)C(=O)O[C@@H]([C@H](O)c1cc2ccc(=O)oc2cc1OC)C(C)(C)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?