O=C(CC1N=C2c3ccccc3N=C(SCC(=O)Nc3ccccc3F)N2C1=O)NCc1cccs1
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?