COc1ccc(CNC(=O)[C@H](C)N2C(=O)N3CCc4c([nH]c5ccccc45)[C@@]3(C)C2=O)cc1OC
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?