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methyl 3-[(10Z,14Z,20Z,22S)-17-ethenyl-12-ethyl-13,18,22,27-tetramethyl-3,5-dioxo-4-oxa-8,24,25,26-tetraazahexacyclo[19.2.1.1~6,9~.1~11,14~.1~16,19~.0~2,7~]heptacosa-1(23),2(7),6(27),8,10,12,14,16,18, related products: