NC(COc1cncc(-c2ccc3c(c2)C(=Cc2ccc[nH]2)C(=O)N3)c1)Cc1ccccc1
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?