COc1ccc(N2CSC3=C(C#N)C(c4cc(OC)c(OC)cc4OC)CC(=O)N3C2)c(OC)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?