CSC1=NS(=O)(=O)c2cc(C(=O)NN(C)C(=O)c3cc4c(cc3Cl)SC(SC)=NS4(=O)=O)c(Cl)cc2S1
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?