DUNAIMYCIN C 2S;Spiro[22,26-methano-20H,24H-furo[2,3-h][1,5]dioxacyclohexacosin-24,2'-[2H]pyran]-20-one, 13-[[5-(dimethylamino)tetrahydro-6-methyl-2H-pyran-2-yl]oxy]-2,3,3',3a,4',5',6,6',7,8,9,10,11,12,13,14,15,16,17,22,23,26,27,27a-tetracosahydro-11,12,14,16,27a-pentahydroxy-6'-(2-hydroxybutyl)-2,2,5',11,15,17,28-...