A1ISD a1isd (1S,2R,3S,5S,6S,16E,20R,21S)-11-chloro-21-hydroxy-12,20-dimethoxy-2,5,9,16-tetramethyl-8,23-dioxo-4,24-dioxa-9,22-diazatetracyclo[19.3.1.1~10,14~.0~3,5~]hexacosa-10(26),11,13,16-tetraen-6-yl 4-(2-{4-[4-({2-[(3S)-2,6-dioxopiperidin-3-yl]-1-oxo-2,3-dihydro-1H-isoindol-4-yl}amino)-4-oxobutyl]-1H-1,2,3-triazol-1-yl}ethyl)benzoate A1ISD