TITLE: GCN CIRCULAR NUMBER: 21252 SUBJECT: Swift Trigger 756953: false identification by MASTER GCN 21250 DATE: 17/06/13 06:57:38 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs Vladimir M. Lipunov Lomonosov Moscow State University, Sternberg Astronomical Institut of MSU The GCN 21250 is my the mistake. I am sorry.