CCCCc1n[nH]c2c1C1(C(=O)N(CC)c3ccccc31)C(C#N)=C(N)O2
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?