Using COc1cccc(-n2c(=O)c(=O)[nH]c3c4ccccc4ccc32)c1 to produce O=c1[nH]c2c3ccccc3ccc2n(-c2cccc(O)c2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.