CCN(CC)C(=O)c1sc2c(c1C)c(=O)n(-c1ccc(OC)cc1OC)c(=O)n2Cc1cc(C)ccc1C
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?