COc1cccc([C@@H]2Oc3ccc(OC)cc3/C(=N/O[C@@H](C)CN3CCCCc4nc(C)c(C)cc43)[C@@H]2O)c1
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?