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 COc1ccc(OC)cc1
b CCOP(=O)(Oc1cnn(C)c(=O)c1OC)SC(C)C
c CN(C)C(=O)SCCCCOc1ccccc1
d CC(Oc1cc(Cl)c(Cl)cc1Cl)C(=O)O
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}