C1C2CC3CC1CC(Nc1nc(NC45CC6CC(CC(C6)C4)C5)nc(NC45CC6CC(CC(C6)C4)C5)n1)(C2)C3
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?