Using Cc1nccn1CCCN, O=C(O)c1cccc2oc(-c3ccccc3)nc12 to produce Cc1nccn1CCCNC(=O)c1cccc2oc(-c3ccccc3)nc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.