Cc1cccc(C)c1NC(=O)Cn1c(=O)n(Cc2ccccc2Cl)c(=O)c2cccnc21
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?