Synonyms: Quartromicin A3;BU-3889V A3;136765-21-4;4a,7:14a,17:26a,29:36a,39-Tetrametheno-6H,16H,28H,38H-tetrabenzo(b,j,t,b1)(1,9,19,27)tetraoxacyclohexatriacontin-6,8,16,18,28,30,38,40(4H,10aH,22aH,32aH)-octone, 2,24-bis((alpha-D-galactopyranosyloxy)methyl)-3,13,14,25,26,35,36,44a-octahydro-45,46,47,48-tetrahydroxy-12,34-bis(hydroxymethyl)-3,10a,13,19,22a,25,32a,35,41,44a-decamethyl-;4a,7:14a,17:26a,29:36a,39-Tetrametheno-6H,16H,28H,38H-tetrabenzo[b,j,t,b1][1,9,19,27]tetraoxacyclohexatriacontin-6,8,16,18,28,30,38,40(4H,10aH,22aH,32aH)-octone, 2,24-bis[(.alpha.-D-galactopyranosylox;y)methyl]-3,13,14,25,26,35,36,44a-octahydro-45,46,47,48-tetrahydroxy-12,34-bis(hydroxymethyl)-3,10a,13,19,22a,25,32a,35,41,44a-decamethyl-