Using COc1cc(CCc2ccc(Nc3ccccc3C(=O)O)cc2)cc(OC)c1OC to produce O=C(O)c1ccccc1Nc1ccc(CCc2cc(O)c(O)c(O)c2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.