CCOc1ccc(CNC(=O)Cn2nc(C)c3nn(-c4ccc(Cl)cc4)c(C)c3c2=O)cc1OC
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?