Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
[a] CNC(=O)ON=C1C(Cl)C2CC(C#N)C1C2
[b] O=CC(Cl)(Cl)CCl
[c] CCS(=O)(=O)CCn1c([N+](=O)[O-])cnc1C
[d] CCOP(=O)(OCC)Oc1ccc2c(C)c(Cl)c(=O)oc2c1
Answer: c
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}