O=C(CCNS(=O)(=O)c1cccc2nsnc12)N1CC(=O)N(CCc2ccccc2)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?