Using CCCn1c(=O)c2c(nn3cc[nH]c23)n(Cc2ccccc2)c1=O to produce CCCn1c(=O)[nH]c2nn3cc[nH]c3c2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.