COc1cc2c(cc1OC)C(C(=O)NCc1cccnc1)C(c1cccnc1)N(C)C2=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?