Using O=CCCC=O, O=[N+]([O-])C=C1NCCN1Cc1cnc(Cl)s1 to produce O=[N+]([O-])C1=C2N(Cc3cnc(Cl)s3)CCN2C2CCC1O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.