Using O=C(O)C(=O)CCc1ccccc1, NC1CN2CCCC(C(=O)O)N2C1=O to produce O=C(O)C(CCc1ccccc1)NC1CN2CCCC(C(=O)O)N2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.