CCCCNc1c(-c2ccc(OC)c(Sc3ccc(OC)cc3)c2)nc2ccccn12.O=C(O)C(F)(F)F
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?