Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, or c without using any other words.
Options:
a. CC1(C)COS(=O)(=O)OC1
b. COc1ccccc1N1CCN(CCCc2ccc3c(c2)CCC(=O)N3)CC1
c. O=C(Oc1cc(C(=O)Oc2cc(C(=O)OC3C(OC(=O)c4cc(O)c(O)c(O)c4)CC(O)(C(=O)O)CC3OC(=O)c3cc(O)c(O)c(O)c3)cc(O)c2O)cc(O)c1O)c1cc(O)c(O)c(O)c1
Answer: a
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}