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 other words.
Options:
(a) CCOP(=O)(OCC)Oc1ccc(N)cc1
(b) O=C(O)c1ccc2ccccc2c1
(c) COP(=O)(OC)OC(=C(Br)Br)c1ccc(Cl)cc1Cl
(d) CS(=O)(=O)Oc1ccc(Cl)cc1Cl
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}