Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
(a) CC(C)(OO)c1cccc(C(C)(C)OO)c1
(b) CCN1CCCC1CNC(=O)c1cc(Cl)cc(Cl)c1OCc1ccccc1
(c) O=S1(=O)CCCO1
(d) Cc1ccc(O)cc1
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}