COc1ccc(C2=NOC3(CC(=O)N(c4ccc(Cl)cc4)C3=O)C2)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?