CCOC(=O)c1c(C)sc(-c2c(-c3cccc(Cl)c3)[nH]c3c2c(=O)n(C)c(=O)n3C)c1O
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?