Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a C=C(C)c1ccc(C(C)(C)N=C=O)cc1
b CCCCOP(=O)(OCCCC)Oc1ccccc1
c CCOC(=O)CN(C(=O)CCl)c1c(CC)cccc1CC
d Cc1cc(O)c(C)c(C)c1O
Answer: c
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}