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: COc1ccc(CCNCC(O)c2ccc(O)cc2)cc1OC
b: Cc1ccc(N=NN(C)C)cc1
c: CCCSP(=O)(OCC)Oc1c(Cl)cc(Cl)cc1Cl
d: CCC(=O)OCc1ccccc1
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}