Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
[a] CCCC(C)C(=O)O
[b] C=CN(CC)N=O
[c] COc1ccc(-c2noc(CC(=O)O)c2-c2ccc(OC)cc2)cc1
[d] CC(=O)Nc1ccncc1
[e] O=C1c2ccccc2C(=O)c2c1ccc(C(=O)O)c2[N+](=O)[O-]
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}