Using COc1cn(-c2cccc(-c3ccccc3)c2)c(-c2ccccc2)cc1=O to produce O=c1cc(-c2ccccc2)n(-c2cccc(-c3ccccc3)c2)cc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.