Oc1c(Cl)cc2cc1-c1cc(cc(Cl)c1O)CCc1c(cc(Cl)c(O)c1Cl)-c1cc(Cl)c(c(Cl)c1O)/C=C\2
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?