CC1CC2=Nc3ccccc3N(C(=O)COc3ccccc3)C(c3ccco3)C2=C(O)C1
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?