C=CC[C@]12C[C@@H](C(=O)OC)N(C(=O)OC)[C@H]1N(S(=O)(=O)c1ccccc1)c1ccccc12
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?