Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
(a) O=C1CCN(c2ccccc2)N1
(b) CNC(=O)Oc1cc(C(C)C)c(OC(=O)NC)cc1C
(c) CCCC(=O)c1ccc(N)cc1
(d) Cc1ccc2c(Cl)cc(Cl)c(O)c2n1
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}