21-O-De(3-carboxy-1-oxo-2-propenyl)-2-demethyl-2-methoxy-21-O,24-dimethylhygrolidin;21-O-Methyl-21-O-de(3-carboxy-1-oxo-2-propenyl)-2-demethyl-2-methoxy-24-methylhygrolidin;Antibiotic L-681110B1;L-681,110B1
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