Using COc1cccc(C(=O)c2c[nH]c3ncc(Nc4ccccc4)cc23)c1 to produce O=C(c1cccc(O)c1)c1c[nH]c2ncc(Nc3ccccc3)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.