N#CCCn1cc(/C=C2\NC(=S)N(c3ccccc3)C2=O)c(-c2ccc(-c3ccccc3)cc2)n1
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?