Using COC(=O)c1cc(Oc2ccc3c(c2)COB3O)ccc1C(N)=O to produce O=C1NC(=O)c2cc(Oc3ccc4c(c3)COB4O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.