CCC(=C(c1ccc(OC)cc1)c1ccc(OC)cc1)c1cn(CC(O)CN2CCN(C)CC2)c2ccccc12
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?