Cc1cc(OCCCC(=O)NCCN2C(=O)S/C(=C\c3cccnc3)C2=O)ccc1Cl
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?