The molecule is a linear-fused organic heterotetracyclic compound consisting of a [1,3,2]dioxaphosphinane fused to a pyran ring which is in turn fused to a pteridine ring system. It is an organic heterotetracyclic compound, an oxacycle and an organonitrogen heterocyclic compound.
5-amino-11,14-dihydroxy-14-oxo-13,15,18-trioxa-2,4,6,9-tetraza-14lambda5-phosphatetracyclo[8.8.0.03,8.012,17]octadeca-1,3(8),4,9,11-pentaen-7-one