| 英文名称: | | 2h-pyran-2-one, 5,6-dihydro-6-(14,19-dihydroxy-3,5,9,11,13,15,17-heptamethyl-12 | | 7,9,17-nonadecapentaenyl)-5-methyl--oxo-3 | | reductoleptomycin a | | rla | | 5,6-dihydro-6-(14,19-dihydroxy-3,5,9,11,13,15,17-heptamethyl-12-oxo-1,3,7,9,17-nonadecapentaenyl)-5-2h-pyran-2-on |
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