CCOC(=O)C1=C(CN2CCSCC2)NC(=O)NC1c1cccc([N+](=O)[O-])c1
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?