Using COC(=O)c1cccc2[nH]c(=O)c(C(=O)c3ccccc3)c(O)c12 to produce O=C(c1ccccc1)c1c(O)c2c(C(=O)O)cccc2[nH]c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.