Cn1c(=O)n(C/C=C/c2ccccc2)c(=O)c2c1nc1n2CCN1c1ccccc1
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?