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[1]JournalofOrganicChemistry,1993,vol.58,p.239-240
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[3]JournalofMedicinalChemistry,2015,vol.58,p.1281-1297
[1]Patent:US4954648,1990,A
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[2]Patent:US2012/172359,2012,A1.Locationinpatent:Page/Pagecolumn49