Using O=C(Nc1cccc(Br)c1)Oc1ccc2c(c1)CCCN2Cc1ccccc1 to produce O=C(Nc1cccc(Br)c1)Oc1ccc2c(c1)CCCN2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.