C#CCOCCOCCOCCNc1nc(N2CCN(C(=O)Cn3cc(CCCCN)nn3)CC2)nc(N2CCN(C(=O)Cn3cc(CCCCN)nn3)CC2)n1.Cl
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?