CC(C)S(=O)(=O)C1=NSC2=NC(=O)/C(=C\c3ccc(-c4cccc(C(=O)O)c4)o3)C(=N)N21
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?