Using COc1cc2c(=O)c(Cc3cccnc3)cn3c4cc(Br)ccc4c(=O)c(c1)c23 to produce O=c1c(Cc2cccnc2)cn2c3cc(Br)ccc3c(=O)c3cc(O)cc1c32, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.