Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
(a) COP(C)(=S)Oc1ccc(Cl)cc1Cl
(b) CC(C(=O)Nc1cc(-c2ccccc2)nn1-c1ccccc1)N(C)C
(c) C1CC2OC2C1OC1CCC2OC12
(d) CCN(CC)C(=O)C(C)Oc1cccc2ccccc12
Answer: a
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}