N[C@@H](Cc1ccccc1)C(=O)N1CCC[C@@H]1P(=O)(Oc1ccccc1)Oc1ccccc1
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?