CCOc1ccccc1N1CCN(C(=O)c2ccc3[nH]c4c(c3c2)CCCC4)CC1
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?