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, or d without using any other words.
Options:
a. CCOP(=O)(CC)Oc1cc(C)nc(SCC)n1
b. CCCSP(C)(=S)SCC(=O)OCC
c. Cc1cc(OC(=O)N(C)C)nn1C(=O)N(C)C
d. CC(=O)C=Cc1ccc(-c2ccccc2)cc1
Answer: c
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}