Using CCOC(=O)Cn1c(=O)c2c(nc(N3CCN(C(=O)OC(C)(C)C)CC3)n2Cc2ccccc2)n(C)c1=O to produce CCOC(=O)Cn1c(=O)c2[nH]c(N3CCN(C(=O)OC(C)(C)C)CC3)nc2n(C)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.