C=CCN1C(=O)/C(=C2/Sc3ccc(OC)cc3N2C)S/C1=N\c1cccc(O)c1
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?