C[C@]12CCC[C@H](O1)[C@H]([C@@H](OC(=O)NCc1ccc(CN)cc1)c1ccccc1)O2
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?