CC1CCCC(C)N1CCCNC(=O)C(=O)Nc1ccc2nc3n(c(=O)c2c1)CCCCC3
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?