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, or d without using any other words.
Options:
a) ClSC(Cl)(Cl)Cl
b) C=C(C)C1CCC(C)(OP(=S)(OC)OC)CC1
c) O=C(NCc1cccnc1)Nc1ccc([N+](=O)[O-])cc1
d) CNC(=O)Oc1ccc(Cl)c2c1OC(C)(C)C2
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}