CCCCCCCCCCNC(=O)CCC(NC(=O)c1ccc(N(C)Cc2cnc3nc(N)nc(N)c3n2)cc1)C(=O)NCCCCCCCCCC
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?