Using COc1ncccc1-c1ccn2c(-c3ccnc(-c4ccccc4)c3)cnc2c1 to produce Oc1ncccc1-c1ccn2c(-c3ccnc(-c4ccccc4)c3)cnc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.