CC1CC(C)(C)CC2(C1)NC(=O)N(CC(=O)NCCc1c[nH]c3ccccc13)C2=O
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?