benzyl 1-(9H-fluoren-9-yl)-10-methyl-3,6-dioxo-2,9-dioxa-4,7-diazaundecan-11-oate

benzyl 1-(9H-fluoren-9-yl)-10-methyl-3,6-dioxo-2,9-dioxa-4,7-diazaundecan-11-oate · CAS 2594423-78-4