Using COc1ccc(Nc2cccc(C(=O)O)c2C(=O)O)c(OC)c1, NC1CCC(=O)NC1=O to produce COc1ccc(Nc2cccc3c2C(=O)N(C2CCC(=O)NC2=O)C3=O)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.