CN(C)CCc1ccc(Nc2nccc(-c3c(-c4cccc(C(O)CO)c4)nc4ccccn34)n2)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?