COc1cc2c(c(OC)c1OC)-c1ccc(SC)c(=O)cc1C(CC(=O)Oc1ccc(F)cc1)C2
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?