00690naa#a2200181#i#450# EN\\bibl\43788 20240506204836.1 2686-9896 20220110b2022####ek#y0engy0150####ca RU HIGH-PRECISION CALCULATION OF 1H AND 13C NMR CHEMICAL SHIFTS OF STRICHNINA ALKALOIDS Journal article Angarsk Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University» 2022 2 с. Journal article local Общие вопросы химии. 31.01 grnti Krivdin Leonid Borisovich Semenov Valentin Aleksandrovich angtu.editorum.ru