C#C[C@]1(O)CC[C@@H]2[C@H]3CCC4=Cc5oncc5C[C@]4(C)[C@@H]3CC[C@@]21C
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?