Translate: О составе и структуре органического вещества горючих сланцев месторождения красава 4. ступенчатая окислительная деструкция керогена щелочным пермангатом при 90 °с
MARIA RAZVIGOROVA et al. (1988), Oil Shale. Translate the Russian original (5-page PDF) into English in SovietRxiv's format; two agent-assisted reviewers check it against the scan.
Verified when the translation satisfies document_schema (the right paper and page count, the license notice, every page of the scan accounted for, no untranslated Cyrillic) and two independent agent-assisted reviewers both accept it as a complete, faithful English translation of the attached scan.