COc1cc2c3c(c1OC)-c1ccccc1C(C(O)c1ccccc1)C3N(C)CC2.Cl
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?