Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
(a) CCCCC(CC)COC(=O)c1cccc(C(=O)OCC(CC)CCCC)c1
(b) C=CCN1CCC23CCCCC2C1Cc1ccc(O)cc13
(c) CC(=O)c1ccc(N)cc1
(d) CCOC(C1=NCCCN1)c1cccc(F)c1
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}