Q: What is the molecular weight of this compound's parent molecule?
 The Chemical has the SMILES O=c1ccc2ccccc2o1.
Result: 146.14
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
O=c1ccc2ccccc2o1
O=c1ccc2ccccc2o1
chromen-2-one
What is the molecular weight of this compound's parent molecule?
146.14