COc1ccc(CCn2c(C)cc(C(=O)CN3C(=O)C(=O)N(Cc4ccco4)C3=O)c2C)cc1
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?