O=C(OC/C=C1\C=C(OC(=O)c2ccccc2)/C(=N/N(C(=O)c2ccccc2)c2ccccc2)O1)c1ccccc1
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?