COc1cc2cc3c(N)c(C(=O)Nc4sc(C)c(C)c4C#N)sc3nc2cc1OC
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?