CCOC(=O)C1SC2(C(F)(F)C(F)F)CC1(O)c1c(c(OC)c3occc3c1OC)O2
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?