C[C@@H]1[C@H]2[C@@H]3CC[C@@H](C3)[C@H]2CN[C@H]1c1cn(Cc2ccccc2)c2ccccc12
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?