Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
[a] COc1ccc(CC(N)C(=O)O)cc1C(=O)O
[b] C=CCOc1ccccc1C(=O)N(CC)CC
[c] OCCOCCOc1ccccc1
[d] CCCC(=O)Oc1ccc(OC)cc1
[e] OC(CCN1CCCCC1)(c1ccccc1)C1CC2C=CC1C2
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}