Chemical name (IUPAC):
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A mixture containing 90% of (10 E ,14 E ,16 E ,22 Z )-(1 R ,4 S ,5′ S ,6 S ,6′ R ,8 R ,12 S ,13 S ,20 R ,21 R ,24 S )-6′-[( S )- sec -butyl]-21,24-dihydroxy-5′,11,13,22-tetramethyl-2-oxo-3,7,19-trioxatetracyclo[ 15.6.1 .1 4,8 .0 20,24 ]pentacosa-10,14,16,22-tetraene-6-spiro-2′-(5′,6′-dihydro-2′ H -pyran)-12-yl 2,6-dideoxy-3- O - methyl-4- O -(2,4,6- trideoxy-3- O -methyl-4-methylamino-a-L- lyxo -hexopyranosyl)- a-L- arabino -hexopyranoside and 10% of (10 E ,14 E ,16 E ,22 Z )-(1 R ,4 S ,5′ S, 6 S ,6' R ,8 R ,12 S ,13 S ,20 R ,21 R ,24 S )-21,24-dihydroxy-6′- isopropyl-5′,11,13,22-tetramethyl-2-oxo-3,7,19-trioxatetracyclo[15.6.1.1 4,8 .0 20,24 ]pentacosa-10,14,16,22-tetraene-6-spiro-2′-(5′,6′-dihydro-2′ H -pyran)-12-yl 2,6-dideoxy-3- O - methyl-4- O -(2,4,6-trideoxy-3- O -methyl-4-methylamino-a-L- lyxo -hexopyranosyl)-a-L- arabino -hexopyranoside
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