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 additional words.
Options:
(a) O=C1CSc2ncccc2N1
(b) O=[N+]([O-])OC1COC2C(O)COC12
(c) CCOP(=S)(OCC)SC1CCSc2ccc(Cl)cc21
(d) Cc1cc(-n2c(C)nc3ccccc3c2=O)n(-c2ccccc2)n1
Answer: c
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}