Task: Answer the following question about the molecule with SMILES Nc1ccncc1N.O=P(O)(O)O.
Question: Is it known if this drug is the first approved in its class, regardless of the indication or route of administration, acting on a specific target?
Result: No
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
Nc1ccncc1N.O=P(O)(O)O
Nc1ccncc1N.O=P(O)(O)O
phosphoric acid;pyridine-3,4-diamine
Is it known if this drug is the first approved in its class, regardless of the indication or route of administration, acting on a specific target?