CCc1ccc(-n2nc(C)c3c(C)cc(=O)n(CC(=O)Nc4cc(Cl)ccc4OC)c32)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?