1,2-Dithiin, 3-(5-hexene-1,3-diynyl)-6-(1-propynyl)- 1-(2-Methyleth-1-yn)-4-(hex-1,3-diyn-5-ene)-2,3-dithiacyclohex-1,3-diene 63543-09-9 Thiarubrin(e) A Thiarubrine A