CSc1nc(SC)c2ncn(C3CC(Oc4ccc(C)cc4)C(COc4ccc(C)cc4)O3)c2n1
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?