![](http://www.alamy.com/thumbs/6/B56D7074-41B5-4580-93AD-57A066354D2B/2NH4B14.jpg)
Complete Structural Formula: Propane, Propene, Benzene and 1,3 butadiene
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Location: Bangalore
Photo credit: © Moorthy R / Alamy / Afripics
License: Royalty Free
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