Oc1ccc2c3c1O[C@@H]1[C@@H](O)CC[C@]4(O)[C@H](C2)N(CC2CCC2)CC[C@@]314
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?