User: I need a compound with a acute oral toxicity rat LD50 of 2751.0 mg/kg.
Assistant: Sure Can you provide me with more constraints?
User: The compound should have a 21 carbon atoms, 14 oxygen atoms, and a molecular mass of 663.430 g/mol. Could you please only provide me with the SMILES and return no other information?
Assistant: NC(=O)c1ccc[n+](C2OC(COP(=O)([O-])OP(=O)(O)OCC3OC(n4cnc5c(N)ncnc54)C(O)C3O)C(O)C2O)c1

User: I need a {#drug|compound|chemical!} with a {CATMoS_LD50_mgkg__names__noun} of {CATMoS_LD50_mgkg#} {CATMoS_LD50_mgkg__units}.
Assistant: {#Happy to help!|Sure!|Of course!} Can you provide me with more {#constraints|details|information!}?
User: The {#drug|compound|chemical!} should have a {num_carbon_atoms#} {num_carbon_atoms__names__noun}, {num_oxygen_atoms#} {num_oxygen_atoms__names__noun}, and a {molecular_mass__names__noun} of {molecular_mass#} {molecular_mass__units}. Could you please only provide me with the {SMILES__description} and return no other information?
Assistant: {SMILES#}

[[5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [5-(3-carbamoylpyridin-1-ium-1-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate