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, or d without using any additional words.
Options:
a: CSC(C)=NOC(=O)N(C)SN(C1CCCCC1)P1(=S)OCC(C)(C)CO1
b: COP(=S)(OC)SCN1C(=O)CSC1=O
c: CC(=O)OC1CCC(C(C)(C)C)CC1
d: CC(=O)OCCO
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}