Using CCCCCCN=C=O, Oc1ccc2c(c1)CCN2Cc1ccccn1 to produce CCCCCCNC(=O)Oc1ccc2c(c1)CCN2Cc1ccccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.