COc1ccc(Cl)cc1NC(=O)CSC1=Nc2ccccc2C2=NC(CC(=O)NCc3ccc4c(c3)OCO4)C(=O)N12
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?