COc1ccc(C2CC(=O)c3cc(-c4nc(-c5ccc(C)cc5)cs4)c(=O)[nH]c3C2)cc1
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?