COc1ccc(/C=C/C(O)=C2\C(=O)NC(=O)N(CCC3=CCCCC3)C2=O)cc1OC
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?