Using COC(=O)CCc1cc2cc(OCCCNC(=O)NCc3ccccc3)ccc2[nH]1 to produce O=C(O)CCc1cc2cc(OCCCNC(=O)NCc3ccccc3)ccc2[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.