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) CN1CC(CCN2CC=C(c3ccccc3)CC2)OC1=O
(b) CCCCOCCOCCOC(OCCOCCOCCCC)c1ccc2c(c1)OCO2
(c) CCCOP(=S)(OCC)Sc1nc(C)cc(C)n1
(d) C=CCOC(=O)CCCCCC
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}