CCCS(=O)(=O)NC(=O)C1(C)CCN(C(=O)c2c(-c3ccccc3)noc2C)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?