CC1(C)[C@@H]2C[C@H]1[C@@H](Cc1cccc(C[C@H]3c4cc(-c5ccccn5)ncc4[C@H]4C[C@@H]3C4(C)C)c1)c1cc(-c3ccccn3)ncc12
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?