Keywords: Pyranthrene.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 Pyranthrene png 2005-12-18 13 03 ParadiseW 376×230× 4489 bytes <nowiki>使用CS ChemDrawåˆ¶ä½ </nowiki> IUPAC names Polycyclic aromatic hydrocarbons |