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) O=C(O)c1cc(S(=O)(=O)O)ccc1O
(b) O=c1[nH]cnc2c1ncn2C1OC(COP(=O)(O)O)C(O)C1O
(c) CCc1ccccc1
(d) C=C(C)C(=O)Nc1ccc(Cl)c(Cl)c1
Answer: d
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}