CNC(=O)c1ncccc1Nc1nc(Nc2cc3c(cc2OC)CCCN3C(=O)CN(C)C)nc2[nH]ccc12
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?