CC(=O)n1cc([C@H]2C=C(C(=O)O)O[C@@H](OCCCCO)C2)c2ccccc21
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?