COc1cccc(/C=C/C2=NN(c3cccc(S(=O)(=O)O)c3)C3(C2)SCC(=O)N3c2nc3ccccc3s2)c1
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?