Using NCC(=O)O, COC(=O)c1ncc2cc(Oc3ccccc3)ccc2c1S to produce O=C(O)CNC(=O)c1ncc2cc(Oc3ccccc3)ccc2c1S, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.