Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a) Cc1ccc(-c2nc3n(c2C=NNC(=O)CN(C)C)CCS3)cc1
b) CCc1cc2c(cc1C=O)C(C)(C)CCC2(C)C
c) OC1(c2ccc(C(F)(F)F)cc2)c2ccccc2C2=NCCN21
d) C=CC1CC2C=CC1C2
e) COc1ccc(-c2ccccc2)cc1CN1CCCC1
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}