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(10S,18E,20R,21R,24S)-10-hydroxy-12,20-dimethyl-21-(1-methylethyl)-5,22-dioxa-1,16,28-triazatricyclo[22.2.1.1~3,6~]octacosa-3,6(28),11,13,18-pentaene-2,8,17,23-tetrone related products: