Task: Answer the following question about the molecule with SMILES CCn1c(=O)c(-c2cc[nH]n2)cc2c(C)nc(N)nc21.
Description: How many hydrogen bond donors does this compound have?
Result: 2
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
CCn1c(=O)c(-c2cc[nH]n2)cc2c(C)nc(N)nc21
CCn1c(=O)c(-c2cc[nH]n2)cc2c(C)nc(N)nc21
2-azanyl-8-ethyl-4-methyl-6-(1H-pyrazol-3-yl)pyrido[2,3-d]pyrimidin-7-one
How many hydrogen bond donors does this compound have?