Using NCC(=O)[O-], CCOC(=O)c1c(O)c2ccc(OC)cc2sc1=O to produce COc1ccc2c(O)c(C(=O)NCC(=O)O)c(=O)sc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.