N#CC1=C(S)N(C2OC(CO)C(O)C(O)C2O)C(c2ccccc2)=CC1c1ccco1
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?