CCCS(=O)(=O)c1c(S(=O)(=O)CCC)c2cc(C(C)(C)C)ccn2c1C(=O)c1ccc(OC)c(OC)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?