CCc1ccc(-n2nc(C)c3c(C(=O)N4CCN(c5cccc(Cl)c5)CC4)cc(C)nc32)cc1
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?