CCN(C(=O)c1nn(-c2ccc(OC)c(Cl)c2)c(=O)c2c1c1ccccc1n2C)c1cc(OC)ccc1OC
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?