CN1CCc2c(c3c(n2C)CCN(C)[C@@H]3c2cccnc2)[C@H]1c1cccnc1.Cl
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?