Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a: CCN(CC)S(=O)(=O)c1ccc(OP(=S)(OC)OC)cc1Cl
b: OCC=Cc1ccccc1
c: CN(C)N=Nc1ccc(I)cc1
d: c1ccc2c(c1)Sc1ccccc1N2CC1CN2CCC1CC2
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}