Using COC(=O)C1CC(=O)N(c2ccc3c(n2)NC(=O)CO3)C1 to produce O=C1COc2ccc(N3CC(C(=O)O)CC3=O)nc2N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.