Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
(a) CNC(=O)Oc1ccccc1C1OCCO1
(b) C=CCOC(=O)CCCCC
(c) C=CCN(CC=C)CC=C
(d) CCCCC(CC)COC(=O)CCCCCCCCCCC(=O)OCC(CC)CCCC
Answer: b
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}