CCOC(=O)CNC(=O)C(CSCC1C(=O)Nc2ccccc21)NC(=O)CCC(N)C(=O)OCC.O=S(=O)(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?