CCCCn1c(N)c(N(CC(C)C)C(=O)c2cccc(S(=O)(=O)N3CCN(C)CC3)c2)c(=O)[nH]c1=O
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?