Using COc1ccc(-n2cc(-c3ccccc3)c3cc(OC)ccc3c2=O)cc1 to produce O=c1c2ccc(O)cc2c(-c2ccccc2)cn1-c1ccc(O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.