Cc1cccc(N2C(=O)N3[C@@H]4c5ccccc5OC[C@@H]4[C@@H](c4ccccc4)[C@@]3(C)C2=O)c1
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?