Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a.) O=[N+]([O-])c1cnc(Cl)c([N+](=O)[O-])c1
b.) CCOC(=O)N(C)SN(C)C(=O)ON=C(C)SC
c.) CC(=O)OCCS(=O)(=O)CCOC(C)=O
d.) Cc1ccc(OC(=O)c2ccccc2)cc1
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}