Using NCC(=O)O, CCOC(=O)c1nc(C)c2onc(-c3ccccc3)c2c1O to produce Cc1nc(C(=O)NCC(=O)O)c(O)c2c(-c3ccccc3)noc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.