Using O=CCCCN1C(=O)c2ccccc2C1=O, NC1CCCc2nccnc21 to produce O=C1c2ccccc2C(=O)N1CCCCNC1CCCc2nccnc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.