Q: Please describe this drug.
Constraint: The Compound has the SMILES Nc1nc2c(c(=O)[nH]1)N(C=O)C(CNc1ccc(C(=O)N[C@H](CCC(=O)O)C(=O)O)cc1)CN2.
Answer: Pteroyl-D-glutamic acid is a glutamic acid derivative.
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
Nc1nc2c(c(=O)[nH]1)N(C=O)C(CNc1ccc(C(=O)N[C@H](CCC(=O)O)C(=O)O)cc1)CN2
C1C(N(C2=C(N1)N=C(NC2=O)N)C=O)CNC3=CC=C(C=C3)C(=O)N[C@H](CCC(=O)O)C(=O)O
(2R)-2-[[4-[(2-amino-5-formyl-4-oxo-3,6,7,8-tetrahydropteridin-6-yl)methylamino]benzoyl]amino]pentanedioic acid
Please describe this drug.