Cc1cccc(C(=O)Oc2ccccc2C2C[C@]3(C)CC(=O)NC3N2C(=O)c2cccc(C)c2)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?