C=CCc1ccc(Oc2cc(CC=C)c3c(c2O)O[C@@H](CO)[C@H]3c2ccc(O)c(-c3cc(CC=C)ccc3O)c2)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?