Cc1ccc(-c2noc(C3CCCN(C(=O)c4ccc(C(C)(C)C)cc4)C3)n2)o1
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?