1-o-[(2s,3s,6r)-4-methoxy-16,18-dioxa-10-azapentacyclo[11.7.0.02,6.06,10.015,19]icosa-1(20),4,13,15(19)-tetraen-3-yl] 4-o-methyl (2r,3s)-2,3-dihydroxy-2-(3-methylbutyl)butanedioate belongs to the cephalotaxus alkaloids, a class of alkaloids and derivatives within the organic compounds. With an average molecular weight of 531.60 g/mol, 1-o-[(2s,3s,6r)-4-methoxy-16,18-dioxa-10-azapentacyclo[11.7.0.02,6.06,10.015,19]icosa-1(20),4,13,15(19)-tetraen-3-yl] 4-o-methyl (2r,3s)-2,3-dihydroxy-2-(3-methylbutyl)butanedioate is a heavy molecule. Its chemical formula is C28H37NO9.