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 additional words.
Options:
a: CN(C)CCC=C1c2ccccc2CCc2sccc21
b: Cc1c(-c2c(C)c(N)c3c(C(C)C)c(O)c(O)c(C=O)c3c2O)c(O)c2c(C=O)c(O)c(O)c(C(C)C)c2c1N
c: CCCCOC(=O)CCCCCCCCC(=O)OCCCC
d: FC(F)OC(F)(F)C(F)Cl
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}