Keywords: Pentaphene.png zh wikipedia 2010 June 12 使用CS ChemDrawåˆ¶ä½ Transferred from http //zh wikipedia org zh wikipedia; transferred to Commons by User Shizhao using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper 2005-12-18 Original uploader was ParadiseW at http //zh wikipedia org zh wikipedia Released into the public domain by the author zh wikipedia ParadiseW Original upload log page zh wikipedia Pentaphene png 2005-12-18 12 54 ParadiseW 353×176× 3358 bytes <nowiki>使用CS ChemDrawåˆ¶ä½ </nowiki> IUPAC names Polycyclic aromatic hydrocarbons |