CC1CN(Cc2nc3c(c(=O)n(C)c(=O)n3C)n2Cc2cccc(Cl)c2)CC(C)O1
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?