C/C(=N\NC(=O)c1cccnc1)c1ccc(OC2OCCOC2Oc2ccc(/C(C)=N/NC(=O)c3cccnc3)cc2)cc1
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?