COc1ccccc1-n1c(SCC(=O)O)nc2c(sc(=S)n2-c2ccc(Cl)c(C)c2)c1=O
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?