N.N.N.O=P(O)(OC[C@H]1O[C@@H](n2cnc3cncnc32)[C@H](O)[C@@H]1O)OP(=O)(O)OP(=O)(O)OP(=O)(O)OC[C@H]1O[C@@H](n2cnc3cncnc32)[C@H](O)[C@@H]1O
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?