NCC(=O)N1CCN(c2nc(N3CCCC3)c3nc(Cl)c(NCc4ccccc4)nc3n2)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?