Cl.O[C@@]12Cc3c([nH]c4ccccc34)[C@@H]3Oc4c(-c5ccccc5)ccc5c4[C@@]31CCN(CC1CC1)[C@@H]2C5
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?