Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a C=CN1CCCC1=O
b Cc1nn(C)c(OCC(=O)c2ccccc2)c1C(=O)c1ccc(Cl)cc1Cl
c CCOC(=O)C(=O)NP(=O)(OC)SC
d COc1ccccc1N1CCN(CC=Cc2ccc3c(c2)CCC(=O)N3)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}