Using O=C(O)C(O)(c1ccccc1)c1ccccc1, CCCCCCC(C(=O)OCC)n1cnc(N)c1 to produce CCCCCCC(C(=O)OCC)n1cnc(NC(=O)C(O)(c2ccccc2)c2ccccc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.