COc1cccc(CN2c3ccccc3-c3nc(SCC(=O)Nc4cccc(C)c4)ncc3S2(=O)=O)c1
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?