Using COC(=O)COc1cccc(CSc2nc(-c3ccccc3)c(-c3ccccc3)[nH]2)c1 to produce O=C(O)COc1cccc(CSc2nc(-c3ccccc3)c(-c3ccccc3)[nH]2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.