Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a: C=CC(O)CC#N
b: CC1=C(C(=O)Nc2ccccc2)S(=O)(=O)CCO1
c: CCOP(=S)(OCC)Oc1nc(Cl)c(Cl)cc1Cl
d: CCC1OCSC1=NOC(=O)NC
e: CCOC(C1=NCC(C)(C)N1)c1ccc(Cl)c(Cl)c1
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}