Write an article about the Upstream and Downstream products of 10βH-Guai-11(13)-en-12-oic acid,3α,4:10,14-diepoxy-2β,5,6α,8β-tetrahydroxy-,12,6-lactone,8-(2-methylcrotonate),(Z)- 2000 words in chemical industry Avoid using the following keywords: methylcrotonate),(z)-, downstream, upstream, word
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