N=C(N)NS(=O)(=O)c1ccc(NC(=O)c2ccc3nc4ccccc4c(Nc4ccc(S(N)(=O)=O)cc4)c3c2)cc1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?