COc1cc(/C=C2\C(=O)N(CCC#N)N=C2C)ccc1OCC(=O)Nc1ccccc1
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?