求翻译：由13C NMR知：化学位移为10-35 ppm主要包括8个碳，其中包括3个甲基碳δC18.5（C-28）、δC14.3（C-7'）、δC12.2（C-29）和5个亚甲基δC36.2（C-2'）、δC25.7（C-3'）、δC30.0（C-4'）、δC32.2（C-5'）、δC23.0（C-6'），其中C-28和C-29为内酯环上的甲基，其余为侧链的甲基和亚甲基。是什么意思？

Known by 13c NMR: chemical shifts of 10-35 ppm, mainly including eight carbon, including three methyl carbon δc18.5 (c-28), δc14.3 (c-7 '), δc12.2 and (c- 29) and 5 the methylene δc36.2 (c-2 '), δc25.7 (c-3'), δc30.0 (c-4 '), δc32.2 (c-5'), δc23. 0 (c-6), c-28 c-29 methyl on the lactone ring, and th

It is composed of 13 C NMR: The chemical shift of 10 - 35 PPM 8 consists mainly of carbon, which includes a 3-methyl-δ C C - 28 (18.5 ) and 14.3 ( δ C C - 7 ' ), δ C C - 29 (12.2 ) and 5-methylene δ C C (36.2 ) - 2 '25.7 , δ C C - 3' ( ) and Delta (C C 30.0 - 4 ') and Delta (C C 32.2 - 5 ') and Delt

By 13C NMR knowledge: Chemistry displacement is 10-35 ppm mainly includes 8 carbon, including 3 methyl carbon δC18.5 (C-28), δC14.3 (C-7'), δC12.2 (C-29) and 5 methyl radicals δC36.2 (C-2'), δC25.7 (C-3'), δC30.0 (C-4'), δC32.2 (C-5'), δC23.0 (C-6'), in which C-28 and C-29 are on the lactonic ring m

By 13C NMR knowledge: major includes 8 carbon chemical shift for 10-35 ppm, including methyl carbon δ 3 C18.5 (C-28), δ the C14.3 (C-7'), δ the C12.2 (C-29) and δ 5 methylene C36.2 (C-2'), δ the C25.7 (C-3'), δ the C30.0 (C-4'), δ the C32.2 (C-5'), δ the C23.0 (C-6'), Where C-28 and C-29 methyl este

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