Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a.) CCNC(=O)Nc1ncc([N+](=O)[O-])s1
b.) CCOC(=O)CC(SP(=S)(OC)OC)C(=O)OCC
c.) CCC(C)c1cnc2nc(N)nc(N)c2c1C
d.) c1ccc([Si]23OCCN(CCO2)CCO3)cc1
e.) CN1CCN(CCCN2c3ccccc3Sc3ccc(Cl)cc32)CC1
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}