Abamectin B1b (~90%)

5-O-Demethyl-25-de(1-methylpropyl)-25-(1-methylethyl)-avermectin A1a; Spiro[11,15-methano-2H,13H,17H-furo[4,3,2-pq][2,6]benzodioxacyclooctadecin-13,2'-[2H]pyran], avermectin A1a deriv.; Abamectin B1b; Antibiotic C 076B1b; Avermectin B1b

CO[C@H]1C[C@H](O[C@H]2[C@H](C)O[C@H](C[C@@H]2OC)O[C@H]3[C@@H](C)\C=C\C=C\4/CO[C@@H]5[C@H](O)C(=C[C@@H](C(=O)O[C@H]6C[C@@H](C\C=C\3/C)O[C@@]7(C6)O[C@H](C(C)C)[C@@H](C)C=C7)[C@]45O)C)O[C@@H](C)[C@@H]1O

InChI=1S/C47H70O14/c1-24(2)41-27(5)16-17-46(61-41)22-33-19-32(60-46)15-14-26(4)42(25(3)12-11-13-31-23-54-44-39(48)28(6)18-34(45(50)57-33)47(31,44)51)58-38-21-36(53-10)43(30(8)56-38)59-37-20-35(52-9)40(49)29(7)55-37/h11-14,16-18,24-25,27,29-30,32-44,48-49,51H,15,19-23H2,1-10H3/b12-11+,26-14+,31-13+/t25-,27-,29-,30-,32+,33-,34-,35-,36-,37-,38-,39+,40-,41+,42-,43-,44+,46+,47+/m0/s1