COC(=O)c1ccc2c(=O)n(CCCCCC(=O)N3CCN(c4cc(Cl)ccc4C)CC3)c(=O)[nH]c2c1
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?