6H-pyrrolo[2,1-f][1,10,4,7,13,16]dioxatetraazacyclononadecine-1,4,8,11,14,17(7H,16H)-hexone, decahydro-2,7,12-trimethyl-10,16-bis(1-methylethyl)-3-[(1S)-1-methylpropyl]-6-(4-pentenyl)-13-(phenylmethyl 8-Benzyl-18-sec-butyl-5,11-diisopropyl-9,14,19-trimethyl-15-pent-4-enyl-dodecahydro-6,16-dioxa-3a,9,12,19-tetraaza-cyclopentacyclononadecene-4,7,10,13,17,20-hexaone Antanapeptin B InChI=1/C41H62N4O8/c1-11-13-15-22-32-28(8)36(46)42-33(25(3)4)38(48)43(9)31(24-29-19-16-14-17-20-29)40(50)53-35(26(5)6)39(49)45-23-18-21-30(45)37(47)44(10)34(27(7)12-2)41(51)52-32/h11,14,16-17,19-20,25-28,30-35H,1,12-13,15,18,21-24H2,2-10H3,(H,42,46)/t27 rel-(3R,10R,13R,16R,21aR)-13-benzyl-10,16-diisopropyl-2,7,12-trimethyl-3-[(1R)-1-methylpropyl]-6-pent-4-en-1-yldecahydro-6H-pyrrolo[2,1-f][1,10,4,7,13,16]dioxatetraazacyclononadecine-1,4,8,11,14,17(7H