CCc1cccc(OCC(O)Cn2c(N3CCCCC3)nc3c2c(=O)[nH]c(=O)n3C)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?