Cc1cc2c(cc1C)N(C(=O)CN1C(=O)c3ccccc3C1=O)C(C)(C)c1ssc(=S)c1-2
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?