Using COc1cccc(Nc2nccc(Nc3ccc4[nH]c(C)cc4c3)n2)c1 to produce Cc1cc2cc(Nc3ccnc(Nc4cccc(O)c4)n3)ccc2[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.