CC1(C)O[C@@H]2[C@@H](C=C[C@H]3OC(c4ccccc4)=N[C@@H]23)O1
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?