O=C(CCCn1c(=O)[nH]c2cc(Cl)ccc2c1=O)NCCN1CCN(c2ccccc2)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?