Using COc1cc(CC(=O)O)cc(OC)c1, NCc1cccc2c1C(=O)N(C1CCC(=O)NC1=O)C2=O to produce COc1cc(CC(=O)NCc2cccc3c2C(=O)N(C2CCC(=O)NC2=O)C3=O)cc(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.