C#CCOCCOCCOCCNc1nc(N2CCN(C(=O)[C@H](CCC(=O)O)n3cc(CN)nn3)CC2)nc(N2CCN(C(=O)[C@H](CCC(=O)O)n3cc(CN)nn3)CC2)n1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?