Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a. OC(c1ccccc1)(c1cncnc1)c1ccc(Cl)cc1Cl
b. COCCCNc1nc(NC(C)C)nc(SC)n1
c. SCCc1cnccn1
d. Cc1cnc(C)c(C)n1
e. CCOC(=O)c1cnc2cc(OCC3CC3)c(OCC3CC3)cc2c1O
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}