COC(=O)c1ccc2c(c1)N(Cc1nc(-c3cccc(Cl)c3)oc1C)C(=O)C1CCCN21
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?