CC(ON=C1C2CCn3c(=O)n(-c4ccccc4)c(=O)n3C2C(O)C2OC12)c1cn(C2COCC2O)nn1
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?