Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
(a) Cc1ccc([N+](=O)[O-])cc1[N+](=O)[O-]
(b) CCOC(C1=NCC(C)(C)CN1)c1ccc(OC)c(F)c1
(c) COc1c(OP(=S)(OC(C)C)OC(C)C)cnn(C)c1=O
(d) N=C(Nc1c([N+](=O)[O-])cnc2ccccc12)N1CCOCC1
Answer: b
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}