COCCNC(=S)N(C)[C@H]1C[C@H]2c3cc(Oc4ccccc4C)ccc3CCN2C(=O)[C@H]1[C@H](C)O
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?