N#Cc1c(NC(=O)C(F)(F)F)sc2c3c(=O)c4ccccc4c(=O)c=3oc3ccccc3c12
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?