COc1ccc(C(c2nnnn2C2CCCCC2)N2CCC3(CC2)C(=O)NCN3c2ccccc2)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?