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, d, or e without using any additional words.
Options:
[a] CC=CC(=O)N(CC)c1ccccc1C
[b] CC(Oc1ccc(Oc2ccc(Cl)cc2)cc1)C(=O)O
[c] c1ccccc1
[d] O=[N+]([O-])c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
[e] CCOP(=O)(OCC)SCn1nc(C)ccc1=O
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}