... -tetramethyl-2-oxo-(3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14 ... ,22-tetraene)-6-spiro-2-(5,6-dihydro-2H-pyran)-12-yl 2,6-dideoxy-4-O-(2,6-dideoxy-3- ... ,12S,13S,20R,21R,24S)-21,22-dihydroxy-6-isopropyl-5,11,13,22-tetramethyl-2-oxo ... -(3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14 ... ,22-tetraene)-6-spiro-2-(5,6-dihydro-2H-pyran)-12-yl2,6-dideoxy-4-O-(2,6-dideoxy-3 ...