C[C@@]12CCC(=O)C=C1CC[C@@H]1[C@@H]2[C@H](O)C[C@]2(C)[C@@H]1CC[C@]2(O)C(=O)CO
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?