Determine the sentiment expressed in the news from financial perspective.
Options: positive, negative

Outlook Therapeutics (NASDAQ:OTLK) Inc said it has voluntarily withdrawn the biologics license application (BLA) for its ophthalmic formulation of bevacizumab (ONS-5010 or Lytenava) after the US Food and Drug Administration (FDA) requested additional information.  The company added that it is actively working to respond to the FDA's request and plans to resubmit a revised BLA by September.
negative