CC1CCCC(C)N1C(=O)Cn1cc(/C=C2/C(=O)Nc3ccccc32)c2ccccc21
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?