CCCC[S+](N)(=O)CCC(N)P(=O)(O)O.O=[N+]([O-])c1cc([N+](=O)[O-])c([O-])c([N+](=O)[O-])c1
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?