Using CCn1c(=O)c2c(nc(C3CCCC3)n2Cc2ccccc2)n2nc(C=O)nc12, N to produce CCn1c(=O)c2c(nc(C3CCCC3)n2Cc2ccccc2)n2nc(CN)nc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.