Keywords: Pentacene (1).png zh wikipedia 2010 June 12 使用CS ChemDrawåˆ¶ä½ zh wikipedia Shizhao CommonsHelper 2005-12-18 ParadiseW wikipedia zh ParadiseW Original upload log page zh wikipedia Pentacene png 2005-12-18 13 02 ParadiseW 376×110× 2945 bytes <nowiki>Acephenathrylene</nowiki> IUPAC names Pentacene |