COc1ccc(-c2noc(CSc3nc4sc(C)c(C)c4c(=O)n3-c3ccccc3)n2)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?