Cc1c2c(OCCCCN3CCN(c4ncccn4)CC3)nn(C)c(=O)c2c(C)n1-c1ccccc1
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?