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The numbering convention is explicit because historical 3/5 naming can be reversed.\nexposure: Three caffeoylquinic-acid standards; eight coffee species and two harvest periods\nevidence_span: {\"source_cache\": \"artifacts/chlorogenic_acid-research/30326634.abstract.txt\", \"locator\": \"Primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"47354c1e3ee8848928923eabc23556d56e71fa1cda32d63a59d2b45f0fb24517\", \"start_char\": 0, \"end_char\": 2069, \"text_sha256\": \"47354c1e3ee8848928923eabc23556d56e71fa1cda32d63a59d2b45f0fb24517\"}\n[chlorogenic_acid-p30326634] Determination of Three Main Chlorogenic Acids in Water Extracts of Coffee Leaves by Liquid Chromatography Coupled to an Electrochemical Detector. 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