CC(C)CN1CCN(C(=O)CCc2nnc(Cc3c[nH]c4ccccc34)o2)[C@@H](C)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?