CCc1nc2ccc(C(=O)NCCOc3ccc(OC)cc3)cn2c1N(CC)Cc1ccc(OC)c(OC)c1
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?