label: 1-((2S,3R,4S)-3,4-dihydro-2-dimethoxymethyl-3-hydroxy-2-methyl-6-nitro-2H-1-benzopyran-4-yl)-1H-indole-2-carboxylic acid ethyl ester
label_lc: 1-((2s,3r,4s)-3,4-dihydro-2-dimethoxymethyl-3-hydroxy-2-methyl-6-nitro-2h-1-benzopyran-4-yl)-1h-indole-2-carboxylic acid ethyl ester