CCCC(=O)N1c2nc(-c3ccco3)nn2C2(CCCCC2)[C@@H]2CCCC[C@@H]21
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?