CC(=N/N=C/c1ccccn1)/C(C)=N/N=C(C)/C(C)=N/N=C(C)/C(C)=N/N=C(C)/C(C)=N\N=C\c1ccccn1
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?