CCOC(=O)C(C(=O)OCC)=C1NC2(c3ccccc3Nc3ccccc32)C(C#N)S1
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?