N#CCCN(CCCN(C(=O)Nc1ccc(NC(=O)N(CCCN(CCC#N)C(N)=O)c2ccccc2)cc1)c1ccccc1)C(N)=O
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?