... -tetraene-6-spiro-2'-(5',6'-dihydro-2'H-pyran)-12-yl 2,6-dideoxy-4-O-(2,6-dideoxy-3 ... -tetraene-6-spiro-2'-(5',6'-dihydro-2'H-pyran)-12-yl 2,6-dideoxy-4-O-(2,6-dideoxy-3 ... (61-47)16-15-27(4)42(26(3)13-12-14-32-24-55-45-40(49)29(6)19 ... -32(60-46)15-14-26(4)42(25(3)12-11-13-31-23-54-44-39(48)28(6 ... ,48-49,51H,15,19-23H2,1-10H3/b13-12+,27-15+,32-14+;12-11+,26-14+,31-13+/t25-,26+,28 ...