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- [37] (8R, 9S, 13S, 14S)-17-butyl-3-methoxy-17-aza-D-homoestra-1,3,5(10)-triene-16,17a-dione ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, 2005, 61 : O3098 - O3100
- [40] 11-Hydroxy-9-[1-(4-methylphenyl)-4-oxo-3-phenylazetidin-2-yl]-18-oxo-10-oxa-2-azapentacyclo-[9.7.0.0(1,8).0(2,6).0(12,17)]octadeca-12,14,16-triene-8-carbonitrile ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, 2012, 68 : O3290 - +