CCN(CC)CC.CCOc1ccccc1-n1c(=S)sc2c(=O)n(-c3ccccc3)c(=S)[nH]c21
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?