C[C@@]12CC[C@H]3[C@@H](CC[C@]4(O)C[C@H](O)CC[C@@]34C=O)[C@]1(O)CC[C@@H]2C1=CC(=O)OC1
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?