Cc1cc(C)cc(-n2c(N)c(C(=O)Nc3c(C)n(C)n(-c4ccccc4)c3=O)c3nc4ccccc4nc32)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?