PMC:280685 / 118-127 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T177","span":{"begin":0,"end":8},"obj":"NN"}],"text":"carboxyl "}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T96","span":{"begin":0,"end":8},"obj":"CHEBI_EXT:carboxy_or_carboxylato_group"}],"text":"carboxyl "}