莫能菌素 MSDS2-[5-Ethyltetrahydro-5-[tetrahydro-3-methyl-5-[tetrahydro-6-hydroxy-6-(hydroxymethyl)-3,5-dimethyl-2H-pyran-2-yl]-2-furyl]-2-furyl]-9-hydroxy-beta-methoxy-alpha,gamma,2,8-tetramethyl-1,6-dioxaspiro[4.5]decane-7-butyric acid