ONH HN O小 O、O Me OH OMe Cs8hoon6o didemnin b Exact Mass:1110.65 Mol.Wt:1111.37 C,6268;H,8.16;,N,7.56;O,21.59O OH O NH O HN O O N Me O OMe O O O N H Me O N O N O OH didemnin B C58H90N6O15 Exact Mass: 1110.65 Mol. Wt.: 1111.37 C, 62.68; H, 8.16; N, 7.56; O, 21.59