C/C=C/Cn1c(SCc2ccc(Cl)cc2)nc2c1c(=O)[nH]c(=O)n2C
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?