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: O=C1CSC(=S)N1
b: OC1(c2ccc(Cl)cc2)c2ccccc2C2=NCCN21
c: C(Oc1nc(OCC2CO2)nc(OCC2CO2)n1)C1CO1
d: O=c1n(CC2CO2)c(=O)n(CC2CO2)n1CC1CO1
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}