CCN1CCN(CCCNC(=O)C2CCCN(c3nc4c(C)cc(C)cc4s3)C2)CC1
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?