CCc1ccccc1N(C)S(=O)(=O)c1ccc2ncc(C(=O)N3CCc4ccccc43)c(O)c2c1
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?