Using O=C(NCCCO)OCc1ccccc1, O=C(O)Cc1ccccc1C(=O)O to produce O=C(Cc1ccccc1C(=O)O)OCCCNC(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.