Oc1ccc(C[C@H]2CNC(=S)N2CC2CCCN2C[C@H](Cc2ccc(O)cc2)N2C[C@H](Cc3ccccc3)N(CC3CCCCC3)C2=S)cc1
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?