==> use zip_file:contained_file to view a file in the archive
Archive:  Studies/ST000617.zip
 Length   Method    Size  Cmpr    Date    Time   CRC-32   Name
--------  ------  ------- ---- ---------- ----- --------  ----
       0  Stored        0   0% 06-05-2017 14:58 00000000  ST000617/
   20948  Defl:N    18376  12% 06-05-2017 10:18 771b4c2a  ST000617/Negative mode metabolites metadata.xlsx
   20196  Defl:N    17320  14% 06-05-2017 10:18 1a8f5db0  ST000617/Positive mdoe metabolites metadata.xlsx
--------          -------  ---                            -------
   41144            35696  13%                            3 files