Cc1cccc(N2CCN(C(=O)c3ccc4c(Cl)c5c(nc4c3)CCCC5)CC2C)c1
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?