CCOC(=O)c1c(-c2ccc(C)o2)csc1NC(=O)CN1CCCCC1.O=C(O)C(=O)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?