SMILES: C1C2C(C(=O)C3C(O2)NC4=C(N3)C(=O)NC(=N4)N)OP(=O)(O1)O
Description: The molecule is a linear-fused organic heterotetracyclic compound consisting of a [1,3,2]dioxaphosphinane fused to a pyran-4-one ring which is in turn fused to a pteridine ring system. It is an organic heterotetracyclic compound, an oxacycle and an organonitrogen heterocyclic compound. It is a conjugate acid of a precursor Z(1-).