Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a) CC(=O)c1cccc(Oc2ccccc2)c1
b) c1ccc(NC[Si]23OCCN(CCO2)CCO3)cc1
c) CCCCCCCCCCCCc1ccc(S(=O)(=O)O)cc1
d) CC(C)N(C(=O)CCl)c1ccccc1
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}