Using O=C1OC(=O)c2cc(Cl)c(Cl)cc21, Nc1cccc(C=C2SC(=O)NC2=O)c1 to produce O=C1NC(=O)C(=Cc2cccc(NC(=O)c3cc(Cl)c(Cl)cc3C(=O)O)c2)S1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.