Cc1ccc2cc(C)c3nnc(SCC(=O)N4CCN(C(=O)c5ccco5)CC4)n3c2c1
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?