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. CNC(=O)Oc1cc(C(C)C)ccc1Cl
b. COc1ccc(NC(=O)N(C)C)cc1Cl
c. Oc1cc(Cl)ccc1Oc1ccc(Cl)cc1Cl
d. CCCNC(=O)C(C)Nc1ccc(OCC)cc1
Answer: a
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}