Cc1cccc(-c2nc3scc(CCNS(=O)(=O)c4ccc(Oc5ccccc5)cc4)n3n2)c1
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?