Cc1ccc2nc3c(cc2c1)CC1(C(=O)N(C)C(=O)N(C)C1=O)C1CCCCN31
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?