C#CCOCCOCCOCCNc1nc(N2CCOCC2)nc(N2CCN(C(=O)CCCCCCCCCCNC(=O)[C@@H](CCC(=O)O)n3cc(CCCCCN)nn3)CC2)n1
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?