CCCOc1ccc(C(=O)Nc2ccc(S(=O)(=O)N3C[C@@H]4C[C@@H](C3)Cn3c4cccc3=O)cc2)cc1
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?