Cc1ccc(-n2c(C)cc(/C(O)=C(/C([S-])=Nc3ccc(F)c(Cl)c3)[n+]3ccccc3)c2C)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?