COc1cc(/C=c2\sc3n(c2=O)C(c2ccc(Cl)cc2)C2=C(CCCC2C)N=3)cc(OC)c1OC
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?